Microphase separation in Pr0.67Ca0.33MnO3 by small-angle neutron scattering -: art. no. 207202

被引：55

作者：

Simon, C

Mercone, S

Guiblin, N

Martin, C

Brûlet, A

André, G

机构：

[1] Univ Caen, Lab CRISMAT, UMR 6508, Inst Sci Matiere & Rayonnement, F-14050 Caen, France

[2] CE Saclay, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.89.207202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have evidenced by small-angle neutron scattering at low temperature the coexistence of ferromagnetism (F) and antiferromagnetism (AF) in Pr0.67Ca0.33MnO3. The results are compared to those obtained in Pr0.80Ca0.20MnO3 and Pr0.63Ca0.37MnO3, which are F and AF, respectively. Quantitative analysis shows that the small-angle scattering is not due to a mesoscopic mixing but to a nanoscopic electronic and magnetic "red cabbage" structure, in which the ferromagnetic phase exists in the form of thin layers in the AF matrix (stripes or 2D "sheets").

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