MAGNETIC-SUSCEPTIBILITY STUDIES IN GD2CUO4 BELOW 300-K

被引：10

作者：

MIRA, J

CASTRO, J

RIVAS, J

BALDOMIR, D

VAZQUEZVAZQUEZ, C

MAHIA, J

LOPEZQUINTELA, A

FIORANI, D

CACIUFFO, R

RINALDI, D

JONES, T

OSEROFF, SB

机构：

[1] UNIV ANCONA,I-60131 ANCONA,ITALY

[2] NR&D,SAN DIEGO,CA

[3] SAN DIEGO STATE UNIV,SAN DIEGO,CA 92182

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 76卷 / 10期

关键词：

D O I：

10.1063/1.358080

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of the real (χ') part of the ac magnetic susceptibility have been performed on two polycrystalline Gd2CuO4 samples sintered at different temperatures, 850°C and 1080°C in the temperature range 10<T(K)<300. Two well-defined maxima have been observed in the temperature dependence of χ'. One, located at about 20 K, that is frequency independent. The second is at about 280 K for the sample annealed at 1080°C, and it is frequency independent. Instead, for the sample annealed at 850°C the maximum appears at about 210 K, and it is frequency dependent. These results suggest the existence of magnetic domains, with their coherence lengths being a function of the thermal treatment.

引用

页码：7034 / 7036

页数：3