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Title: Frustrated magnetism and local structural disorder in pyrochlore-type Bi1.89Fe1.16Nb0.95O6.95
Authors: Miiller, W
Causeret, L
Ling, CD
Keywords: Magnetic properties
Spin glass state
Zone melting
Neutron diffraction
Issue Date: 8-Dec-2010
Publisher: Institute of Physics
Citation: Miiller, W., Causeret, L., & Ling, C. D. (2010). Frustrated magnetism and local structural disorder in pyrochlore-type Bi1.89Fe1.16Nb0.95O6.95. Journal of Physics-Condensed Matter, 22(48), 486004. doi:10.1088/0953-8984/22/48/486004
Abstract: The magnetic properties of pyrochlore-type Bi1.89Fe1.16Nb0.95O6.95 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 6s2 electron lone pair on Bi3 + ions. The magnetic properties are discussed in terms of both the topologically frustrated Fe3 + lattice and the role of this local structural disorder. © 2010, Institute of Physics
Gov't Doc #: 3121
ISSN: 0953-8984
Appears in Collections:Journal Articles

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