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NIST High Temp. Superconducting Materials (HTS) Database:

NIST Standard Reference Database 62

Last Update to Data Content: 1996

DOI: https://doi.org/10.18434/T4KP8J

Bibliographic Information

Title: Structural Effects of Hydrostatic Pressure in Orthorhombic La2-xSrxCuO4
Author(s): H. Takahashi, H. Shaked, B.A. Hunter, P.G. Radaelli, R.L. Hitterman, D.G. Hinks, and J.D. Jorgensen
Publication: Physical Review B Volume: 50 Issue: 5 Year: 1994 Page(s): 3221-3229
Editor(s): Not Available
Publisher: American Physical Society
Language: English
Notes: Not Available
Keywords: Material Specification, Crystallography

Materials and Properties

La:21; [La(Sr)-Cu-O]
Material Specification for La:21; [La(Sr)-Cu-O] Process: Solid State Reaction
Notes: The authors cite P.G. Radaelli et al., Phys. Rev. B, Vol. 49, 4163 (1994), and summarize the procedure as follows. "After synthesis, the x = 0.10 sample was annealed at 700 °C in flowing oxygen, followed by slow cooling to room temperature. The x = 0.00 sample was annealed at 700 °C in flowing nitrogen, and then rapidly quenched to room temperature. These annealing conditions produce samples with oxygen contents close to 4.00."
Formula: La2-xSrxCuO4
Informal Name: La:21
Chemical Family: La(Sr)-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:

Crystallography for La:21; [La(Sr)-Cu-O]
Crystal System: Orthorhombic
Formula Units per Cell:
Space Group: Bmab
Cell Parameters
P (GPa) x (formula units) Temp K a Å b Å c Å
0.000 0 60 5.3352(1) 5.4160(1) 13.1058(1)
0.100 0 60 5.3341(1) 5.4137(1) 13.1040(2)
0.201 0 60 5.331(1) 5.4113(1) 13.1019(2)
0.303 0 60 5.3321(1) 5.4092(1) 13.0997(2)
0 408 0 60 5.3308(1) 5.4070(1) 13.0975(3)
0.508 0 60 5.3299(1) 5.4049(1) 13.0951(2)
0.603 0 60 5.3290(1) 5.4026(1) 13.0932(2)
0.000 0 295 5.3560(1) 5.4044(1) 13.1491(2)
0.102 0 295 5.3546(1) 5.4018(1) 13.1463(2)
0.200 0 295 5.3532(1) 5.3997(1) 13.1438(2)
0.303 0 295 5.3522(1) 5.3975(1) 13.1414(2)
0.408 0 295 5.3511(1) 5.3950(1) 13.1387(2)
0.508 0 295 5.3500(1) 5.3925(1) 13.1366(2)
0.612 0 295 5.3488(1) 5.3905(1) 13.1344(2)
0.000 0.1 60 5.3260(1) 5.3713(1) 13.1641(2)
0.100 0.1 60 5.3249(1) 5.3691(1) 13.1614(2)
0.200 0.1 60 5.3239(1) 5.3668(1) 13.1593(2)
0.301 0.1 60 5.3229(1) 5.3643(1) 13.1569(2)
0.409 0.1 60 5.3219(1) 5.3621(1) 13.1548(1)
0.510 0.1 60 5.3212(1) 5.3599(1) 13.1524(2)
0.605 0.1 60 5.3203(1) 5.3579(1) 13.1503(2)
Atomic Coordinates
P (GPa) x (formula units) Atom Temp K a-axis b-axis c-axis
0.000 0 La 60 0 0.0084(3) 0.3616(1)
0.100 0 La 60 0 0.0080(3) 0.3618(1)
0.201 0 La 60 0 0.0070(3) 0.3619(1)
0.303 0 La 60 0 0.0088(3) 0.3619(1)
0.408 0 La 60 0 0.0092(3) 0.3620(1)
0.508 0 La 60 0 0.0094(3) 0.3621(1)
0.603 0 La 60 0 0.0091(3) 0.3618(1)
0.000 0 Cu 60 0 0 0
0.100 0 Cu 60 0 0 0
0.201 0 Cu 60 0 0 0
0.303 0 Cu 60 0 0 0
0.408 0 Cu 60 0 0 0
0.508 0 Cu 60 0 0 0
0.608 0 Cu 60 0 0 0
0.000 0 O(1) 60 0.25 0.25 0.0089(2)
0.100 0 O(1) 60 0.25 0.25 0.0083(2)
0.201 0 O(1) 60 0.25 0.25 0.0085(2)
0.303 0 O(1) 60 0.25 0.25 0.0082(2)
0.408 0 O(1) 60 0.25 0.25 0.0084(2)
0.508 0 O(1) 60 0.25 0.25 0.0086(2)
0.603 0 O(1) 60 0.25 0.25 0.0087(2)
0.000 0 O(2) 60 0 -0.0403(3) 0.1834(1)
0.100 0 O(2) 60 0 -0.0402(3) 0.1834(1)
0.201 0 O(2) 60 0 -0.0398(3) 0.1834(1)
0.303 0 O(2) 60 0 -0.0397(3) 0.1832(1)
0.408 0 O(2) 60 0 -0.0393(3) 0.1832(1)
0.508 0 O(2) 60 0 -0.0388(3) 0.1827(1)
0.603 0 O(2) 60 0 -0.0375(3) 0.1831(1)
0.000 0 La 295 0 0.0073(3) 0.3614(1)
0.102 0 La 295 0 0.0071(3) 0.3614(1)
0.200 0 La 295 0 0.0063(3) 0.3614(1)
0.303 0 La 295 0 0.0065(3) 0.3615(1)
0.408 0 La 295 0 0.0073(3) 0.3614(1)
0.508 0 La 295 0 0.0065(3) 0.3615(1)
0.612 0 La 295 0 0.0058(3) 0.3616(1)
0.000 0 Cu 295 0 0 0
0.102 0 Cu 295 0 0 0
0.200 0 Cu 295 0 0 0
0.303 0 Cu 295 0 0 0
0.408 0 Cu 295 0 0 0
0.508 0 Cu 295 0 0 0
0.612 0 Cu 295 0 0 0
0.000 0 O(1) 295 0.25 0.25 0.0078(2)
0.102 0 O(1) 295 0.25 0.25 0.0078(2)
0.200 0 O(1) 295 0.25 0.25 0.0077(2)
0.303 0 O(1) 295 0.25 0.25 0.0075(2)
0.408 0 O(1) 295 0.25 0.25 0.0076(2)
0.508 0 O(1) 295 0.25 0.25 0.0077(2)
0.612 0 O(1) 295 0.25 0.25 0.0073(2)
0.000 0 O(2) 295 0 -0.0341(3) 0.1834(1)
0.102 0 O(2) 295 0 -0.0339(3) 0.1836(1)
0.200 0 O(2) 295 0 -0.0337(3) 0.1835(1)
0.303 0 O(2) 295 0 -0.0337(3) 0.1833(1)
0.408 0 O(2) 295 0 -0.0334(3) 0.1832(1)
0.508 0 O(2) 295 0 -0.0323(3) 0.1835(1)
0.612 0 O(2) 295 0 -0.0323(3) 0.1831(1)
0.000 0.1 La/Sr 60 0 0.0064(3) 0.3613(1)
0.100 0.1 La/Sr 60 0 0.0063(3) 0.3614(1)
0.200 0.1 La/Sr 60 0 0.0071(3) 0.3612(1)
0.301 0.1 La/Sr 60 0 0.0070(3) 0.3613(1)
0.409 0.1 La/Sr 60 0 0.0067(3) 0.3613(1)
0.510 0.1 La/Sr 60 0 0.0065(2) 0.3621(1)
0.605 0.1 La/Sr 60 0 0.0070(4) 0.3615(1)
0.000 0.1 Cu 60 0 0 0
0.100 0.1 Cu 60 0 0 0
0.200 0.1 Cu 60 0 0 0
0.301 0.1 Cu 60 0 0 0
0.409 0.1 Cu 60 0 0 0
0.510 0.1 Cu 60 0 0 0
0.605 0.1 Cu 60 0 0 0
0.000 0.1 O(1) 60 0.25 0.25 0.0068(2)
0.100 0.1 O(1) 60 0.25 0.25 0.0066(2)
0.200 0.1 O(1) 60 0.25 0.25 0.0065(2)
0.301 0.1 O(1) 60 0.25 0.25 0.0067(2)
0.409 0.1 O(1) 60 0.25 0.25 0.0060(1)
0.510 0.1 O(1) 60 0.25 0.25 0.0062(1)
0.605 0.1 O(1) 60 0.25 0.25 0.0062(1)
0.000 0.1 O(2) 60 0 -0.0308(3) 0.1822(1)
0.100 0.1 O(2) 60 0 -0.0303(3) 0.1821(1)
0.200 0.1 O(2) 60 0 -0.0290(4) 0.1823(1)
0.301 0.1 O(2) 60 0 -0.0283(4) 0.1824(1)
0.409 0.1 O(2) 60 0 -0.0286(3) 0.1823(1)
0.510 0.1 O(2) 60 0 -0.0280(3) 0.1821(1)
0.605 0.1 O(2) 60 0 -0.0267(4) 0.1823(1)
Measurement Method: Neutron diffraction
The authors cite J. D. Jorgensen et al., Physica C, Vol. 171, 93 (1990), and summarize the procedure as follows. "Time-of-flight neutron powder diffraction data were collected on the special environment powder diffractometer (SEPD) at Argonne's intense pulse neutron source (IPNS). The SEPD was equipped with a helium pressure cell mounted on a 12-W closed-cycle refrigerator (Displex). This apparatus allows the temperature of the sample to be controlled between 60 K and room temperature with an accuracy of ±0.1 K. The pressure cell design allows data collection between 0 GPa and 0.6 GPa at a fixed scattering angle of 2θ=±90° with no Bragg scattering from the cell. ... For each experiment, data were collected for approximately 4 h per pressure... The data were analyzed using the Rietveld technique, using the IPNS time-of-flight Rietveld code."

Cautions: Evaluated Data