Magnetization studies of phase separation in La0.5Ca0.5MnO3 -: art. no. 104403

被引：56

作者：

Freitas, RS

Ghivelder, L

Levy, P

Parisi, F

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil

[2] Comis Nacl Energia Atom, Dept Fis, RA-1650 Buenos Aires, DF, Argentina

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.65.104403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present magnetization studies in a series of phase-separated La0.5Ca0.5MnO3 manganite samples, with different low-temperature fractions of the ferromagnetic (FM) and charge-ordered antiferromagnetic phases. A particular experimental procedure probes the effect of the magnetic field applied while cooling the samples, which promotes FM fraction enlargement and enhances the melting of the charge-ordered phase. The response of the system depending on its magnetic field history indicates the existence of three different regimes in the phase-separated state which develops below T-C. Our data allow us to identify the onset temperature below which the system becomes magnetic and structurally phase separated and an onset field above which FM fraction enlargement occurs.

引用

收藏

页码：1044031 / 1044038

页数：8

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