Temperature evolution of the local atomic structure in oxygen isotope substituted Pr0.525La0.175Ca0.3MnO3

被引：0

作者：

M. Gutmann

E.S. Božin

S.J.L. Billinge

N.A. Babushkina

L.M. Belova

A.R. Kaul

O.Yu. Gorbenko

机构：

[1] ISIS Facility,

[2] Rutherford Appleton Laboratory,undefined

[3] Chilton Didcot,undefined

[4] Oxfordshire OX11 0QX,undefined

[5] UK,undefined

[6] Michigan State University,undefined

[7] Physics Department,undefined

[8] East Lansing MI 48824-1116,undefined

[9] USA,undefined

[10] RRC “Kurchatov Institute”,undefined

[11] Kurchatov Square 1,undefined

[12] 123182,undefined

[13] Moscow,undefined

[14] Russia,undefined

[15] Department of Chemistry,undefined

[16] Moscow State University,undefined

[17] 119899 Moscow,undefined

[18] Russia,undefined

来源：

Applied Physics A | 2002年 / 74卷

关键词：

PACS: 61.12.-q; 75.30.Vn; 61.43.Gt;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The local atomic structure of two oxygen isotope substituted samples of Pr0.525La0.175Ca0.3MnO3 with 16O and 18O has been studied as a function of temperature using the pair-distribution function (PDF) obtained from pulsed neutron diffraction. The sample containing 16O undergoes an insulator–metal (IM) transition below 100 K while the sample substituted with 18O remains insulating at all temperatures. We find from the PDF that the shape of the MnO6 octahedra changes from being elongated, due to a Jahn–Teller distortion, to a more regular shape below the IM transition in the 16O sample, whereas the 18O sample remains distorted at all temperatures.

引用

页码：s892 / s894

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