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

Producción científica: Article › revisión exhaustiva

10 Citas (Scopus)

Resumen

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.

Idioma original	English
Páginas (desde-hasta)	1073-1078
Número de páginas	6
Publicación	Solid State Communications
Volumen	65
N.º	10
DOI	https://doi.org/10.1016/0038-1098(88)90896-4
Estado	Published - mar 1988

Nota bibliográfica

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

Financiación

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

Financiadores	Número del financiador
RAS - Institute of Solid State Physics	-8615463, -8400041
National Science Foundation (NSF)

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(88)90896-4

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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",

month = mar,

doi = "10.1016/0038-1098(88)90896-4",

language = "English",

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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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