perovskite atlas Structures, modes and phase transitions · Josu M. Igartua · UPV/EHU

Reported geometry of SrNdNiRuO6 at 300 K

Reported geometry of SrNdNiRuO6 at 300 K

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9 keys }
  "id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry"
  "changelog" 1 items ],
     3 keys }
      "timestamp""2026-09-30T05:59:03+00:00"
      "user""perovskite-atlas/fer_export.py"
      "description""Geometry. Generated from atlas records at git 98609f0."
    
  
  "description""Reported geometry of SrNdNiRuO6 at 300 K"
  "correct"true
  "state" 1 items ],
     3 keys }
      "name""temperature"
      "description""conditions of the refined structure"
      "quantity_value" 9 keys }
        "id""str:srndniruo6.p21n.300k.iturbe2012#T"
        "name""Temperature"
        "description""Temperature of the measurement as reported (uncertainty not reported)"
        "quantities""Temperature"
        "symbols""$T$"
        "units""K"
        "values" 1 items ],
          300.0
        
        "standard_uncertainties" 1 items ],
          0.0
        
        "atlas" 2 keys }
          "uncertainty_reported"false
          "reported_as""300"
        
      
    
  
  "results" 6 items ],
     9 keys },
      "id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry#bonds"
      "name""Bond lengths"
      "description"""
      "quantities""M-O1(×2)""M-O2(×2)""M-O3(×2)""Ru-O1(×2)""Ru-O2(×2)""Ru-O3(×2)"
      "symbols""$d(M-O1(×2))$""$d(M-O2(×2))$""$d(M-O3(×2))$""$d(Ru-O1(×2))$""$d(Ru-O2(×2))$""$d(Ru-O3(×2))$"
      "units""Å""Å""Å""Å""Å""Å"
      "values" 6 items ],
        1.996
        2.0
        2.073
        1.96
        2.015
        1.93
      
      "standard_uncertainties" 6 items ],
        0.006
        0.006
        0.009000000000000001
        0.006
        0.006
        0.009000000000000001
      
      "atlas" 2 keys }
        "uncertainty_reported"truetruetruetruetruetrue
        "reported_as""1.996(6)""2.000(6)""2.073(9)""1.960(6)""2.015(6)""1.930(9)"
      
    
     9 keys },
      "id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry#angles"
      "name""Bond angles"
      "description"""
      "quantities""O1-M-O2""O1-M-O3""O2-M-O3""O1-Ru-O2""O1-Ru-O3""O2-Ru-O3""M-O1-Ru""M-O2-Ru""M-O3-Ru"
      "symbols""$\\angle(O1-M-O2)$""$\\angle(O1-M-O3)$""$\\angle(O2-M-O3)$""$\\angle(O1-Ru-O2)$""$\\angle(O1-Ru-O3)$""$\\angle(O2-Ru-O3)$""$\\angle(M-O1-Ru)$""$\\angle(M-O2-Ru)$""$\\angle(M-O3-Ru)$"
      "units""°""°""°""°""°""°""°""°""°"
      "values" 9 items ],
        94.7
        87.7
        90.1
        87.3
        92.7
        90.2
        163.1
        154.2
        155.0
      
      "standard_uncertainties" 9 items ],
        0.2
        0.2
        0.2
        0.2
        0.2
        0.2
        0.2
        0.2
        0.1
      
      "atlas" 2 keys }
        "uncertainty_reported"truetruetruetruetruetruetruetruetrue
        "reported_as""94.7(2)""87.7(2)""90.1(2)""87.3(2)""92.7(2)""90.2(2)""163.1(2)""154.2(2)""155.0(1)"
      
    
     9 keys },
      "id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry#tilts"
      "name""Octahedral tilt angles"
      "description"""
      "quantities""ψ_[001]p""φ_[110]p"
      "symbols""ψ_[001]p""φ_[110]p"
      "units""°""°"
      "values" 2 items ],
        5.6
        12.9
      
      "standard_uncertainties" 2 items ],
        0.1
        0.30000000000000004
      
      "atlas" 2 keys }
        "uncertainty_reported"truetrue
        "reported_as""5.6(1)""12.9(3)"
      
    
     9 keys },
      "id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry#bvs"
      "name""Bond-valence sums"
      "description"""
      "quantities""M""Ru"
      "symbols""$V(M)$""$V(Ru)$"
      "units""1""1"
      "values" 2 items ],
        2.22
        5.01
      
      "standard_uncertainties" 2 items ],
        0.02
        0.04
      
      "atlas" 2 keys }
        "uncertainty_reported"truetrue
        "reported_as""2.22(2)""5.01(4)"
      
    
     9 keys },
      "id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry#octahedron:MO6"
      "name""Octahedron MO6"
      "description"""
      "quantities""volume""average_bond""predicted_bond"
      "symbols""$volume$""$average_bond$""$predicted_bond$"
      "units""Å^3""Å""Å"
      "values" 3 items ],
        10.99
        2.023
        2.0605
      
      "standard_uncertainties" 3 items ],
        0.01
        0.003
        0.0
      
      "atlas" 2 keys }
        "uncertainty_reported"truetruefalse
        "reported_as""10.99(1)""2.023(3)""2.0605"
      
    
     9 keys }
      "id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry#octahedron:RuO6"
      "name""Octahedron RuO6"
      "description"""
      "quantities""volume""average_bond""predicted_bond"
      "symbols""$volume$""$average_bond$""$predicted_bond$"
      "units""Å^3""Å""Å"
      "values" 3 items ],
        10.14
        1.968
        1.9675
      
      "standard_uncertainties" 3 items ],
        0.01
        0.003
        0.0
      
      "atlas" 2 keys }
        "uncertainty_reported"truetruefalse
        "reported_as""10.14(1)""1.968(3)""1.9675"
      
    
  
  "measurands""bond lengths""bond angles""bond-valence sums"
  "source" 6 keys },
    "id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry#derivation"
    "name""Geometry derived from the refined structure"
    "description"""
    "model""Interatomic distances, angles and bond-valence sums computed from the refined coordinates and cell (as reported in the source document)"
    "influence_quantities"
    "input_quantities" 1 items ]
       9 keys }
        "id""str:srndniruo6.p21n.300k.iturbe2012"
        "changelog" 1 items ],
           3 keys }
            "timestamp""2026-09-30T05:59:03+00:00"
            "user""perovskite-atlas/fer_export.py"
            "description""Refined structure. Generated from atlas records at git 98609f0."
          
        
        "description""Refined crystal structure of SrNdNiRuO6 at 300 K, P2_1/n"
        "correct"true
        "state" 1 items ],
           3 keys }
            "name""temperature"
            "description""conditions of the refined structure"
            "quantity_value" 9 keys }
              "id""str:srndniruo6.p21n.300k.iturbe2012#T"
              "name""Temperature"
              "description""Temperature of the measurement as reported (uncertainty not reported)"
              "quantities""Temperature"
              "symbols""$T$"
              "units""K"
              "values" 1 items ],
                300.0
              
              "standard_uncertainties" 1 items ],
                0.0
              
              "atlas" 2 keys }
                "uncertainty_reported"false
                "reported_as""300"
              
            
          
        
        "results" 9 items ],
           9 keys },
            "id""str:srndniruo6.p21n.300k.iturbe2012#cell"
            "name""Unit cell"
            "description""Cell parameters, space group P2_1/n (No. 14)"
            "quantities""a""b""c""alpha""beta""gamma"
            "symbols""$a$""$b$""$c$""$\\alpha$""$\\beta$""$\\gamma$"
            "units""Å""Å""Å""°""°""°"
            "values" 6 items ],
              5.5301
              5.5388
              7.8166
              90.0
              90.015
              90.0
            
            "standard_uncertainties" 6 items ],
              0.0002
              0.0002
              0.00030000000000000003
              0.0
              0.008
              0.0
            
            "atlas" 2 keys }
              "uncertainty_reported"truetruetruefalsetruefalse
              "reported_as""5.5301(2)""5.5388(2)""7.8166(3)""90""90.015(8)""90"
            
          
           9 keys },
            "id""str:srndniruo6.p21n.300k.iturbe2012#volume"
            "name""Cell volume"
            "description"""
            "quantities""V"
            "symbols""$V$"
            "units""Å^3"
            "values" 1 items ],
              239.42
            
            "standard_uncertainties" 1 items ],
              0.01
            
            "atlas" 2 keys }
              "uncertainty_reported"true
              "reported_as""239.42(1)"
            
          
           9 keys },
            "id""str:srndniruo6.p21n.300k.iturbe2012#atom:Sr/Nd"
            "name""Atom Sr/Nd (Sr, Wyckoff 4e)"
            "description""Fractional coordinates and isotropic displacement; occupancy 0.5/0.5 (Sr/Nd)"
            "quantities""x""y""z""B_iso"
            "symbols""$x$""$y$""$z$""$B_{\\mathrm{iso}}$"
            "units""1""1""1""Å^2"
            "values" 4 items ],
              -0.0053
              0.4697
              0.756
              0.55
            
            "standard_uncertainties" 4 items ],
              0.0009000000000000001
              0.00030000000000000003
              0.001
              0.03
            
            "atlas" 2 keys }
              "uncertainty_reported"truetruetruetrue
              "reported_as""-0.0053(9)""0.4697(3)""0.756(1)""0.55(3)"
            
          
           9 keys },
            "id""str:srndniruo6.p21n.300k.iturbe2012#atom:O1"
            "name""Atom O1 (O, Wyckoff 4e)"
            "description""Fractional coordinates and isotropic displacement; occupancy 1"
            "quantities""x""y""z""B_iso"
            "symbols""$x$""$y$""$z$""$B_{\\mathrm{iso}}$"
            "units""1""1""1""Å^2"
            "values" 4 items ],
              -0.272
              0.224
              -0.0286
              0.61
            
            "standard_uncertainties" 4 items ],
              0.001
              0.001
              0.0007
              0.02
            
            "atlas" 2 keys }
              "uncertainty_reported"truetruetruetrue
              "reported_as""-0.272(1)""0.224(1)""-0.0286(7)""0.61(2)"
            
          
           9 keys },
            "id""str:srndniruo6.p21n.300k.iturbe2012#atom:O2"
            "name""Atom O2 (O, Wyckoff 4e)"
            "description""Fractional coordinates and isotropic displacement; occupancy 1"
            "quantities""x""y""z""B_iso"
            "symbols""$x$""$y$""$z$""$B_{\\mathrm{iso}}$"
            "units""1""1""1""Å^2"
            "values" 4 items ],
              -0.79
              0.293
              0.0396
              0.61
            
            "standard_uncertainties" 4 items ],
              0.001
              0.001
              0.0007
              0.02
            
            "atlas" 2 keys }
              "uncertainty_reported"truetruetruetrue
              "reported_as""-0.790(1)""0.293(1)""0.0396(7)""0.61(2)"
            
          
           9 keys },
            "id""str:srndniruo6.p21n.300k.iturbe2012#atom:O3"
            "name""Atom O3 (O, Wyckoff 4e)"
            "description""Fractional coordinates and isotropic displacement; occupancy 1"
            "quantities""x""y""z""B_iso"
            "symbols""$x$""$y$""$z$""$B_{\\mathrm{iso}}$"
            "units""1""1""1""Å^2"
            "values" 4 items ],
              0.0778
              0.0083
              0.759
              0.61
            
            "standard_uncertainties" 4 items ],
              0.0007
              0.0006000000000000001
              0.001
              0.02
            
            "atlas" 2 keys }
              "uncertainty_reported"truetruetruetrue
              "reported_as""0.0778(7)""0.0083(6)""0.759(1)""0.61(2)"
            
          
           9 keys },
            "id""str:srndniruo6.p21n.300k.iturbe2012#atom:Ru"
            "name""Atom Ru (Ru, Wyckoff 2a)"
            "description""Fractional coordinates and isotropic displacement; occupancy 1; B_iso fixed"
            "quantities""x""y""z""B_iso"
            "symbols""$x$""$y$""$z$""$B_{\\mathrm{iso}}$"
            "units""1""1""1""Å^2"
            "values" 4 items ],
              0.0
              0.0
              0.0
              0.5
            
            "standard_uncertainties" 4 items ],
              0.0
              0.0
              0.0
              0.0
            
            "atlas" 2 keys }
              "uncertainty_reported"falsefalsefalsefalse
              "reported_as""0""0""0""0.5"
            
          
           9 keys },
            "id""str:srndniruo6.p21n.300k.iturbe2012#atom:Ni"
            "name""Atom Ni (Ni, Wyckoff 2b)"
            "description""Fractional coordinates and isotropic displacement; occupancy 1; B_iso fixed"
            "quantities""x""y""z""B_iso"
            "symbols""$x$""$y$""$z$""$B_{\\mathrm{iso}}$"
            "units""1""1""1""Å^2"
            "values" 4 items ],
              0.0
              0.0
              0.0
              0.5
            
            "standard_uncertainties" 4 items ],
              0.0
              0.0
              0.0
              0.0
            
            "atlas" 2 keys }
              "uncertainty_reported"falsefalsefalsefalse
              "reported_as""0""0""0""0.5"
            
          
           9 keys }
            "id""str:srndniruo6.p21n.300k.iturbe2012#reliability"
            "name""Rietveld reliability factors"
            "description""As reported; no uncertainties"
            "quantities""r_p""r_wp""r_exp""r_bragg""chi2"
            "symbols""$R_p$""$R_{wp}$""$R_{exp}$""$R_{Bragg}$""$\\chi^2$"
            "units""%""%""%""%""1"
            "values" 5 items ],
              4.32
              5.52
              2.11
              6.79
              6.84
            
            "standard_uncertainties" 5 items ],
              0.0
              0.0
              0.0
              0.0
              0.0
            
            "atlas" 2 keys }
              "uncertainty_reported"falsefalsefalsefalsefalse
              "reported_as""4.32""5.52""2.11""6.79""6.84"
            
          
        
        "measurands""unit cell""atomic coordinates""displacement parameters"
        "source" 6 keys },
          "id""ref:srndniruo6.p21n.300k.iturbe2012.all-modes"
          "name""Rietveld refinement (FullProf, symmetry-mode)"
          "description"""
          "model""Least-squares Rietveld refinement of the powder pattern; symmetry-mode parametrisation where method = symmetry-mode; variant all-modes"
          "influence_quantities" 1 items ],
             9 keys }
              "id""str:srndniruo6.p21n.300k.iturbe2012#T"
              "name""Temperature"
              "description""Temperature of the measurement as reported (uncertainty not reported)"
              "quantities""Temperature"
              "symbols""$T$"
              "units""K"
              "values" 1 items ],
                300.0
              
              "standard_uncertainties" 1 items ],
                0.0
              
              "atlas" 2 keys }
                "uncertainty_reported"false
                "reported_as""300"
              
            
          
          "input_quantities" 1 items ]
             9 keys }
              "id""dat:srndniruo6.iturbe2012.npd.rt"
              "changelog" 1 items ],
                 3 keys }
                  "timestamp""2026-09-30T05:59:03+00:00"
                  "user""perovskite-atlas/fer_export.py"
                  "description""Dataset stub. Generated from atlas records at git 98609f0."
                
              
              "description""NPD pattern of mat:srndniruo6 at 300 K on D2B high-resolution neutron powder diffractometer (Institut Laue-Langevin, Grenoble)"
              "correct"true
              "state"
              "results"
              "measurands""diffraction pattern"
              "source" 6 keys },
                "id""ins:ill-d2b"
                "name""D2B high-resolution neutron powder diffractometer"
                "description"""
                "model""powder diffraction"
                "influence_quantities"
                "input_quantities"
              
              "atlas" 5 keys }
                "record_id""dat:srndniruo6.iturbe2012.npd.rt"
                "status""published"
                "evidence" 1 items ],
                   5 keys }
                    "doc""doc:thesis-03"
                    "md_line"950
                    "table""5.1"
                    "status""thesis-only"
                    "cell" 1 keys }
                      "col""SrNdNiRuO6"
                    
                  
                
                "atlas_schema_version""0.1"
                "note""raw pattern not yet attached; results are empty by design until data rescue"
              
            
          
        
        "atlas" 5 keys }
          "record_id""str:srndniruo6.p21n.300k.iturbe2012"
          "status""published"
          "evidence" 1 items ],
             5 keys }
              "doc""doc:thesis-03"
              "md_line"950
              "table""5.1"
              "status""thesis-only"
              "cell" 1 keys }
                "col""SrNdNiRuO6"
              
            
          
          "atlas_schema_version""0.1"
          "refinement" 4 keys }
            "record_id""ref:srndniruo6.p21n.300k.iturbe2012.all-modes"
            "status""published"
            "evidence" 1 items ],
               5 keys }
                "doc""doc:thesis-03"
                "md_line"950
                "table""5.1"
                "status""thesis-only"
                "cell" 1 keys }
                  "col""SrNdNiRuO6"
                
              
            
            "atlas_schema_version""0.1"
          
        
      
    
  
  "atlas" 4 keys }
    "record_id""fnd:srndniruo6.p21n.300k.iturbe2012.geometry"
    "status""published"
    "evidence" 1 items ],
       5 keys }
        "doc""doc:thesis-03"
        "md_line"998
        "table""5.2"
        "status""thesis-only"
        "cell" 1 keys }
          "col""Ni"
        
      
    
    "atlas_schema_version""0.1"
  

id fnd:srndniruo6.p21n.300k.iturbe2012.geometry · correct true · measurands bond lengths, bond angles, bond-valence sums

State

Temperature · Temperature of the measurement as reported (uncertainty not reported)

quantity symbol value u (standard) unit
Temperature T 300 0 K not reported

Results

Bond lengths

quantity symbol value u (standard) unit
M-O1(×2) d(M-O1(×2)) 1.996 0.006 Å
M-O2(×2) d(M-O2(×2)) 2.000 0.006 Å
M-O3(×2) d(M-O3(×2)) 2.073 0.009 Å
Ru-O1(×2) d(Ru-O1(×2)) 1.960 0.006 Å
Ru-O2(×2) d(Ru-O2(×2)) 2.015 0.006 Å
Ru-O3(×2) d(Ru-O3(×2)) 1.930 0.009 Å

Bond angles

quantity symbol value u (standard) unit
O1-M-O2 \angle(O1-M-O2) 94.7 0.2 °
O1-M-O3 \angle(O1-M-O3) 87.7 0.2 °
O2-M-O3 \angle(O2-M-O3) 90.1 0.2 °
O1-Ru-O2 \angle(O1-Ru-O2) 87.3 0.2 °
O1-Ru-O3 \angle(O1-Ru-O3) 92.7 0.2 °
O2-Ru-O3 \angle(O2-Ru-O3) 90.2 0.2 °
M-O1-Ru \angle(M-O1-Ru) 163.1 0.2 °
M-O2-Ru \angle(M-O2-Ru) 154.2 0.2 °
M-O3-Ru \angle(M-O3-Ru) 155.0 0.1 °

Octahedral tilt angles

quantity symbol value u (standard) unit
ψ_[001]p ψ_[001]p 5.6 0.1 °
φ_[110]p φ_[110]p 12.9 0.3 °

Bond-valence sums

quantity symbol value u (standard) unit
M V(M) 2.22 0.02
Ru V(Ru) 5.01 0.04

Octahedron MO6

quantity symbol value u (standard) unit
volume volume 10.99 0.01 ų
average_bond average_bond 2.023 0.003 Å
predicted_bond predicted_bond 2.0605 0 Å not reported

Octahedron RuO6

quantity symbol value u (standard) unit
volume volume 10.14 0.01 ų
average_bond average_bond 1.968 0.003 Å
predicted_bond predicted_bond 1.9675 0 Å not reported

Source

Geometry derived from the refined structure · model: Interatomic distances, angles and bond-valence sums computed from the refined coordinates and cell (as reported in the source document)

Input quantities

str:srndniruo6.p21n.300k.iturbe2012 · Refined crystal structure of SrNdNiRuO6 at 300 K, P2_1/n · own page

id str:srndniruo6.p21n.300k.iturbe2012 · correct true · measurands unit cell, atomic coordinates, displacement parameters

State

Temperature · Temperature of the measurement as reported (uncertainty not reported)

quantity symbol value u (standard) unit
Temperature T 300 0 K not reported

Results

Unit cell · Cell parameters, space group P2_1/n (No. 14)

quantity symbol value u (standard) unit
a a 5.5301 0.0002 Å
b b 5.5388 0.0002 Å
c c 7.8166 0.0003 Å
alpha \alpha 90 0 ° not reported
beta \beta 90.015 0.008 °
gamma \gamma 90 0 ° not reported

Cell volume

quantity symbol value u (standard) unit
V V 239.42 0.01 ų

Atom Sr/Nd (Sr, Wyckoff 4e) · Fractional coordinates and isotropic displacement; occupancy 0.5/0.5 (Sr/Nd)

quantity symbol value u (standard) unit
x x -0.0053 0.0009
y y 0.4697 0.0003
z z 0.756 0.001
B_iso B_{\mathrm{iso}} 0.55 0.03 Ų

Atom O1 (O, Wyckoff 4e) · Fractional coordinates and isotropic displacement; occupancy 1

quantity symbol value u (standard) unit
x x -0.272 0.001
y y 0.224 0.001
z z -0.0286 0.0007
B_iso B_{\mathrm{iso}} 0.61 0.02 Ų

Atom O2 (O, Wyckoff 4e) · Fractional coordinates and isotropic displacement; occupancy 1

quantity symbol value u (standard) unit
x x -0.790 0.001
y y 0.293 0.001
z z 0.0396 0.0007
B_iso B_{\mathrm{iso}} 0.61 0.02 Ų

Atom O3 (O, Wyckoff 4e) · Fractional coordinates and isotropic displacement; occupancy 1

quantity symbol value u (standard) unit
x x 0.0778 0.0007
y y 0.0083 0.0006
z z 0.759 0.001
B_iso B_{\mathrm{iso}} 0.61 0.02 Ų

Atom Ru (Ru, Wyckoff 2a) · Fractional coordinates and isotropic displacement; occupancy 1; B_iso fixed

quantity symbol value u (standard) unit
x x 0 0 not reported
y y 0 0 not reported
z z 0 0 not reported
B_iso B_{\mathrm{iso}} 0.5 0 Ų not reported

Atom Ni (Ni, Wyckoff 2b) · Fractional coordinates and isotropic displacement; occupancy 1; B_iso fixed

quantity symbol value u (standard) unit
x x 0 0 not reported
y y 0 0 not reported
z z 0 0 not reported
B_iso B_{\mathrm{iso}} 0.5 0 Ų not reported

Rietveld reliability factors · As reported; no uncertainties

quantity symbol value u (standard) unit
r_p R_p 4.32 0 % not reported
r_wp R_{wp} 5.52 0 % not reported
r_exp R_{exp} 2.11 0 % not reported
r_bragg R_{Bragg} 6.79 0 % not reported
chi2 \chi^2 6.84 0 not reported

Source

Rietveld refinement (FullProf, symmetry-mode) · model: Least-squares Rietveld refinement of the powder pattern; symmetry-mode parametrisation where method = symmetry-mode; variant all-modes

Influence quantities

Temperature · Temperature of the measurement as reported (uncertainty not reported)

quantity symbol value u (standard) unit
Temperature T 300 0 K not reported

Input quantities

dat:srndniruo6.iturbe2012.npd.rt · NPD pattern of mat:srndniruo6 at 300 K on D2B high-resolution neutron powder diffractometer (Institut Laue-Langevin, Grenoble)

id dat:srndniruo6.iturbe2012.npd.rt · correct true · measurands diffraction pattern

Results

Empty (no results attached yet).

Source

D2B high-resolution neutron powder diffractometer · model: powder diffraction

Changelog

timestamp user description
2026-09-30T05:59:03+00:00 perovskite-atlas/fer_export.py Dataset stub. Generated from atlas records at git 98609f0.

Changelog

timestamp user description
2026-09-30T05:59:03+00:00 perovskite-atlas/fer_export.py Refined structure. Generated from atlas records at git 98609f0.

Changelog

timestamp user description
2026-09-30T05:59:03+00:00 perovskite-atlas/fer_export.py Geometry. Generated from atlas records at git 98609f0.

Atlas extension

record fnd:srndniruo6.p21n.300k.iturbe2012.geometry · status published