DETERMINATION OF THE ANGULAR-DEPENDENCE OF HC2 IN HIGH-TC SINGLE-CRYSTALS BY A MICROWAVE TECHNIQUE

被引：4
|
作者：
SHALTIEL, D
BILL, H
GRAYEVSKY, A
JUNOD, A
LOVY, D
SADOWSKI, S
WALKER, E
机构：
[1] UNIV GENEVA, PHYSICOCHIM SOLIDE GRP, CH-1211 GENEVA 4, SWITZERLAND
[2] UNIV GENEVA, DEPT PHYS MAT CONDENSEE, CH-1211 GENEVA 4, SWITZERLAND
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1991年 / 4卷
关键词：
D O I：
10.1088/0953-2048/4/1S/014
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It is shown that using an ESR spectrometer with magnetic field modulation and sweeping the temperature across T(c) (at a constant and a very low magnetic field), is equivalent to temperature modulation. The signal intensity obtained when crossing T(c) is proportional to 1/(partial-H(c2)/partial-T) at T = T(c). Using the WHH relation H(c2)(T = 0) = 0.7 T(c)(partial-H(c2)/partial-T)(T = Tc) it enabled the measurement of the relative angular variation of H(c2) in single crystals of YBaCuO with T(c) approximately 85K. The data fit the Ginzberg-Landau theory. This very sensitive technique can be used to characterize properties of high T(c) superconducting materials. Results on thin films will also be presented.
引用
收藏
页码：S85 / S87
页数：3
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