GD-3+ ELECTRON-PARAMAGNETIC RESONANCE IN THE QUASI-2-DIMENSIONAL ANTIFERROMAGNET YBA2CU3O6.02-GD

被引：20

作者：

JANOSSY, A ^{[1
]}

ROCKENBAUER, A ^{[1
]}

PEKKER, S ^{[1
]}

机构：

[1] CENT RES INST CHEM,H-1525 BUDAPEST,HUNGARY

来源：

PHYSICA C | 1990年 / 167卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(90)90346-G

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Electron paramagnetic resonance (EPR) at 9.25 GHz of Y1-xGdxBa2Cu3O6.02 (0.001 < x < 0.05) powder magnetically a ligned along the crystallographic c-direction shows a well resolved Gd3+ fine structure. The crystalline field parameters are determined and their temperature dependence discussed. Due to the special symmetry the exchange interaction between Gd3+ and antiferromagnetic CuO2 layers is small, contrary to Y2-uGduBaCuO5 where Gd3+ and Cu2+ magnetizations are strongly coupled. EPP serves as a probe for internal fields HI at the Gd sites; in Y0.99Gd0.01Ba2Cu2.97Fe0.03O6.02HI<15 G despite the Fe-induced magnetic transition. © 1990.

引用

页码：301 / 306

页数：6

共 14 条

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