Magnetodielectric response of square-coordinated MnO2 unit in cubic BiMn7O12

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2011
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Mcode
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Language
en
Pages
1-3
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APPLIED PHYSICS LETTERS, Volume 98, issue 7
Abstract
The magnetodielectric (MD) effect for BiMn7O12 with the cubic A′A″3B4O12-type A-site-ordered perovskite structure has been investigated. A clear negative MD response around and beyond TN has been observed and attributed to antiferromagnetic spin fluctuations. With further decreasing temperature (T⪡TN) a switching to a complex positive MD effect is found confirming additional contribution coming from the magnetic ordering. The present study underlines the importance of square-coordinated MnA″O2 units for generating MD coupling in an A′A″3B4O12-type structure; the magnitude of the MD effect then strongly depends on the precise chemical composition.
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Imamura , N , Singh , K , Pelloquin , D , Simon , C , Sasagawa , T , Karppinen , M , Yamauchi , H & Maignan , A 2011 , ' Magnetodielectric response of square-coordinated MnO2 unit in cubic BiMn7O12 ' , Applied Physics Letters , vol. 98 , no. 7 , 072903 , pp. 1-3 . https://doi.org/10.1063/1.3551540