Spin freezing and magnetic inhomogeneities in bilayer manganites

被引：19

作者：

Coldea, AI

Blundell, SJ

Steer, CA

Mitchell, JF

Pratt, FL

机构：

[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

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

[3] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 27期

关键词：

D O I：

10.1103/PhysRevLett.89.277601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed a muon spin rotation study on polycrystalline samples of electron-doped layered manganites, La2-2xSr1+2xMn2O7 (0.4less than or equal tox<1), in order to investigate the local magnetic structure and spin dynamics. Our results provide evidence for phase separation into A-type antiferromagnetic and charge-ordered phases for x=0.52 and spin freezing at low temperatures (T<100 K) for 0.52less than or equal tox<0.75. A new phase diagram which includes this spin-freezing region is proposed.

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收藏

页码：277601 / 277601

页数：4

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