Anomalous magnetic properties of MnO nanoclusters.

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Anomalous magnetic properties of MnO nanoclusters. Abstract Text:

Gang H Lee,Seung H Huh,Jin W Jeong,Byeong J Choi,Seung H Kim,Hyeong-C Ri,

In this communication, we experimentally report, for the first time, that the MnO nanoclusters with cluster diameters of 5-10 nm show a ferromagnetic behavior with a phase transition from ferromagnetic to paramagnetic phases at 27 K even though their bulk phase is antiferromagnetic. We observed large coercivities up to 9500 Oe and a large remanence of 1.72 emu/g at 2 K, which are typically observed values for ferromagnetic materials. Although it is not clear, this abnormal ferromagnetic behavior of MnO nanoclusters may arise from cluster size effects.

Anomalous magnetic properties of MnO nanoclusters. Publishing Authors By Initials

GH Lee,SH Huh,JW Jeong,BJ Choi,SH Kim,HC Ri,

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Anomalous magnetic properties of MnO nanoclusters. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of the American Chemical Society

VOLUME: 124

Page Numbers: 12094-5

Journal Abbreviation: J. Am. Chem. Soc.

ISSN: 0002-7863

DAY: 16

MONTH: Oct

YEAR: 2002

Anomalous magnetic properties of MnO nanoclusters. Information

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LANGUAGE: eng

NlmUniqueID: 7503056

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AFFILIATION: Department of Chemistry, College of Natural Sciences, Kyungpook National University, Taegu 702-701, South Korea. ghlee@bh.knu.ac.kr

Country: United States

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MEDLINETA: J Am Chem Soc

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