The influence of crystal electrical field on first- and second-order magnetic phase transition in Praseodymium intermetallics

被引：0
|
作者：
von Ranke, PJ
de Oliveira, NA
Caldas, A
机构：
[1] Univ Fed Rio de Janeiro, Inst Fis, BR-20550013 Rio De Janeiro, RJ, Brazil
[2] Univ Gama Filho, Dept Fis, BR-20748280 Rio De Janeiro, RJ, Brazil
来源：
PHYSICA A | 1998年 / 256卷 / 3-4期
关键词：
Landau phase transition; rare-earth intermetallics; crystal field;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In order to investigate the influence of crystal electrical field on determining the first- or second-order ferromagnetic-paramagnetic phase transition, we have considered Praseodymium intermetallics systems PrX2 (X = Al,Ni,Rh,Ru,Mg), Using a theoretical model which takes into account the crystal field and exchange interaction, we have studied in analytical form the Landau free energy as a function of the model parameters, that leads to a phase diagram, which permits to show that the existence of first- or second-order magnetic phase transitions is strongly related to the magnitude of crystal field and critical temperature. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：397 / 405
页数：9
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