ELASTIC PROPERTIES OF BI2SR2CA1CU2O8 AND BI2SR1.5CA1.5CU2O8

被引：12

作者：

LEDBETTER, H ^{[1
]}

KIM, S ^{[1
]}

TOGANO, K ^{[1
]}

机构：

[1] NATL RES INST MET,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)91691-V

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

For polycrystalline Bi-Sr-Ca-Cu-O (2212 and 2, 1.5, 1.5, 2), we report the 5-295-K elastic constants: shear modulus, Young modulus, bulk modulus, Poisson ratio. The two materials behave differently. The 2212 behaves nearly regularly: for example the bulk modulus increases smoothly and monotonically about 3% between 295 and 5 K, showing little thermal hysteresis. However, during cooling, the higher-calcium material shows a strong elastic softening below 200 K, and also a large thermal hysteresis. The strong mode softening in the higher-calcium material differs from that found in (La-Sr)2CuO4. The extrapolated 0-K elastic constants lead to Debye temperatures of 284 and 269 K.

引用

页码：935 / 936

页数：2

共 6 条

[1] LOW-TEMPERATURE ELASTIC-CONSTANTS OF POLYCRYSTALLINE LA2CUO4 AND LA1.85SR0.15CUO4 [J].

LEDBETTER, H ;

KIM, SA ;

VIOLET, CE ;

THOMPSON, JD .

PHYSICA C, 1989, 162 :460-461

[2] ELASTIC-CONSTANTS, DEBYE TEMPERATURES, AND ELECTRON-PHONON PARAMETERS OF SUPERCONDUCTING CUPRATES AND RELATED OXIDES [J].

LEDBETTER, H ;

LEI, M ;

KIM, SD .

PHASE TRANSITIONS, 1990, 23 (01) :61-70

[3]

LEDBETTER H, 1988, PHYS REV B, V38, P857

[4]

LEI M, 1991, NIST1349 TECH NOT

[5] SOUND-VELOCITY IN BI2SR2CACU2O8 SINGLE-CRYSTALS [J].

SAINTPAUL, M ;

THOLENCE, JL ;

NOEL, H ;

LEVET, JC ;

POTEL, M ;

GOUGEON, P .

PHYSICA C, 1990, 166 (5-6) :405-407

[6] Temperature dependence of the elastic constants [J].

Varshni, Y. P. .

PHYSICAL REVIEW B-SOLID STATE, 1970, 2 (10) :3952-3958

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