Elastic properties of polycrystalline La2-xSrxCuO4

X. D. Xiang; J. W. Brill; L. E. DeLong; L. C. Bourne; A. Zettl; Jonathan C. Jones; L. A. Rice

doi:10.1016/0038-1098(88)90896-4

Elastic properties of polycrystalline La_2-xSr_xCuO₄

X. D. Xiang, J. W. Brill, L. E. DeLong, L. C. Bourne, A. Zettl, Jonathan C. Jones, L. A. Rice

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

We report on the temperature dependence of the shear (G) and Young's (E) moduli of polycrystalline La_1.85Sr_0.15CuO₄ and La₂CuO₄. We find that E∼3G, implying that the single crystal shear moduli are small, so that the polycrystalline E and G are determined by the single crystal shear moduli only. Contrary to expectations, there are large, but sample dependent, drops in moduli at T_c for the superconducting Sr-alloy. The large shear softening associated with the tetragonal-orthorhombic transition at 180K is also very sample dependent, and does not appear simply related to the superconducting transition. The polycrystalline elastic moduli are very hysteretic below the structural transition, presumably due to the distortion driven variation in crystalline dimensions with temperature.

Original language	English
Pages (from-to)	1073-1078
Number of pages	6
Journal	Solid State Communications
Volume	65
Issue number	10
DOIs	https://doi.org/10.1016/0038-1098(88)90896-4
State	Published - Mar 1988

Bibliographical note

Funding Information:
Acknowledgement-This work was funded in part by the National Science foundation--Solid State Physics, Grants #DMR-8615463 and #DMR-8400041.

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(88)90896-4

Cite this

@article{9c4ceefaf6854ad2b46a63da57cd6ce2,

title = "Elastic properties of polycrystalline La2-xSrxCuO4",

abstract = "We report on the temperature dependence of the shear (G) and Young's (E) moduli of polycrystalline La1.85Sr0.15CuO4 and La2CuO4. We find that E∼3G, implying that the single crystal shear moduli are small, so that the polycrystalline E and G are determined by the single crystal shear moduli only. Contrary to expectations, there are large, but sample dependent, drops in moduli at Tc for the superconducting Sr-alloy. The large shear softening associated with the tetragonal-orthorhombic transition at 180K is also very sample dependent, and does not appear simply related to the superconducting transition. The polycrystalline elastic moduli are very hysteretic below the structural transition, presumably due to the distortion driven variation in crystalline dimensions with temperature.",

author = "Xiang, {X. D.} and Brill, {J. W.} and DeLong, {L. E.} and Bourne, {L. C.} and A. Zettl and Jones, {Jonathan C.} and Rice, {L. A.}",

note = "Funding Information: Acknowledgement-This work was funded in part by the National Science foundation--Solid State Physics, Grants #DMR-8615463 and #DMR-8400041.",

year = "1988",

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T1 - Elastic properties of polycrystalline La2-xSrxCuO4

AU - Xiang, X. D.

AU - Brill, J. W.

AU - DeLong, L. E.

AU - Bourne, L. C.

AU - Zettl, A.

AU - Jones, Jonathan C.

AU - Rice, L. A.

N1 - Funding Information: Acknowledgement-This work was funded in part by the National Science foundation--Solid State Physics, Grants #DMR-8615463 and #DMR-8400041.

PY - 1988/3

Y1 - 1988/3

N2 - We report on the temperature dependence of the shear (G) and Young's (E) moduli of polycrystalline La1.85Sr0.15CuO4 and La2CuO4. We find that E∼3G, implying that the single crystal shear moduli are small, so that the polycrystalline E and G are determined by the single crystal shear moduli only. Contrary to expectations, there are large, but sample dependent, drops in moduli at Tc for the superconducting Sr-alloy. The large shear softening associated with the tetragonal-orthorhombic transition at 180K is also very sample dependent, and does not appear simply related to the superconducting transition. The polycrystalline elastic moduli are very hysteretic below the structural transition, presumably due to the distortion driven variation in crystalline dimensions with temperature.

AB - We report on the temperature dependence of the shear (G) and Young's (E) moduli of polycrystalline La1.85Sr0.15CuO4 and La2CuO4. We find that E∼3G, implying that the single crystal shear moduli are small, so that the polycrystalline E and G are determined by the single crystal shear moduli only. Contrary to expectations, there are large, but sample dependent, drops in moduli at Tc for the superconducting Sr-alloy. The large shear softening associated with the tetragonal-orthorhombic transition at 180K is also very sample dependent, and does not appear simply related to the superconducting transition. The polycrystalline elastic moduli are very hysteretic below the structural transition, presumably due to the distortion driven variation in crystalline dimensions with temperature.

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