A field induced ferromagnetic-like transition below 2.8 K in Li2CuO2:: An experimental and theoretical study

被引:10
作者
Ortega, RJ [1 ]
Jensen, PJ
Rao, KV
Sapiña, F
Beltran, D
Iqbal, Z
Cooley, JC
Smith, JL
机构
[1] Royal Inst Technol, Dept Condensed Matter Phys, S-10044 Stockholm, Sweden
[2] Univ Valencia, Inst Ciencia Mat, E-46100 Burjassot, Spain
[3] Allied Signal Inc, Morristown, NJ 07962 USA
[4] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[5] Univ Publ Navarra, Dept Fis, E-31006 Pamplona, Spain
[6] Hahn Meitner Inst Kernforsch Berlin GmbH, Bereich Theorie TV, D-14109 Berlin, Germany
关键词
D O I
10.1063/1.367670
中图分类号
O59 [应用物理学];
学科分类号
摘要
The low temperature magnetic properties of the Li2CuO2 compound have been investigated by means of superconducting quantum interference device magnetometry, We find in addition to an antiferromagnetic phase below 9.5 K a ferromagnetic-like steep rise of the magnetization around 2.8 K. The observed low temperature behavior is discussed by considering second and fourth order magnetocrystalline effective anisotropy coefficients, in addition to the exchange couplings reported in the literature. (C) 1998 American Institute of Physics.
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页码:6542 / 6544
页数:3
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