Neutron scattering study of the competing magnetic correlations in La0.85Sr0.15CoO3

被引：8

作者：

Phelan, D. ^{[1
,2
]}

Louca, Despina ^{[1
]}

Ancona, S. N. ^{[3
]}

Rosenkranz, S. ^{[3
]}

Zheng, H. ^{[3
]}

Mitchell, J. F. ^{[3
]}

机构：

[1] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA

[2] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 09期

关键词：

ferromagnetic materials; lanthanum compounds; long-range order; magnetic structure; magnetic susceptibility; neutron diffraction; short-range order; spin glasses; strontium compounds; PHASE-SEPARATION; LA1-XSRXCOO3;

D O I：

10.1103/PhysRevB.79.094420

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nature of the competing ferromagnetic and incommensurate spin correlations in the spin-glass phase of La0.85Sr0.15CoO3 has been investigated by various neutron scattering techniques. Spin-polarized scattering indicates that the observed incommensurate peaks are dominantly magnetic in nature. Magnetic field experiments show that a field applied perpendicular to the short-range ordering wave vector destroys the incommensurate correlations and induces long-range ferromagnetic order. However, even for fields up to 7 T, short-range ferromagnetic correlations still coexist with the long-range ordered regions.

引用

页数：5

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