ULTRASONIC MEASUREMENT ON THE SINGLE-CRYSTAL LA2(1-X)SR2XCUO4

被引：0
|
作者：
YAMAGUCHI, M [1 ]
SUZUKI, M [1 ]
OKUDA, Y [1 ]
HIDAKA, Y [1 ]
MURAKAMI, T [1 ]
机构：
[1] NIPPON TELEGRAPH & TEL PUBL CORP, APPL ELECTR LABS, IBARAKI 31911, JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1990年 / 29卷
关键词：
D O I：
10.7567/JJAPS.29S1.28
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Ultrasonic measurement of the single crystal La2(1-x)Sr(2x)CuO4 (x = 0.06) was performed from 4.2 K to 300 K with emphasis on the anomalies near the superconducting transition T(c) of 11 K and the structural phase transition T(d) of 250 K. A longitudinal wave was propagated parallel to the Cu-O plane. On cooling from room temperature down to the structural phase transition temperature, the sound velocity decreased gradually. A large discontinuity of sound velocity from 5.1 x 10(3) m/sec to 3.2 x 10(3) m/sec was observed just at the structural phase transition. The discontinuity of sound velocity at T(c) was not found within the present resolution of DELTA-V/V approximately 5 x 10(-6).
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页码：28 / 30
页数：3
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