Frustrated magnetism and local structural disorder in pyrochlore-type Bi1.89Fe1.16Nb0.95O6.95
The magnetic properties of pyrochlore-type Bi(1.89)Fe(1.16)Nb(0.95)O(6.95) have been investigated for the first time using AC and DC susceptibility. The compound is shown to behave as a classical spin glass due to strong competition/coexistence of ferro- and antiferromagnetic exchange. The study was...
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Published in | Journal of physics. Condensed matter Vol. 22; no. 48; p. 486004 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Bristol
IOP Publishing
08.12.2010
Institute of Physics |
Subjects | |
Online Access | Get full text |
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Summary: | The magnetic properties of pyrochlore-type Bi(1.89)Fe(1.16)Nb(0.95)O(6.95) have been investigated for the first time using AC and DC susceptibility. The compound is shown to behave as a classical spin glass due to strong competition/coexistence of ferro- and antiferromagnetic exchange. The study was accompanied by the first-ever growth of single crystals of this compound using the floating-zone method, allowing us to carry out a single-crystal neutron diffraction experiment that confirmed and extended our understanding of local structural disorder, driven by the stereochemically active 6s(2) electron lone pair on Bi(3+) ions. The magnetic properties are discussed in terms of both the topologically frustrated Fe(3+) lattice and the role of this local structural disorder. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0953-8984 1361-648X |
DOI: | 10.1088/0953-8984/22/48/486004 |