Ca-Al double-substituted strontium hexaferrites with giant coercivity

We demonstrate that the simultaneous substitution of calcium and aluminum for strontium and iron in strontium hexaferrite results in a significant increase of coercivity up to a record high of 21.3 kOe. We propose that the effect is originated from a crystal structure distortion causing an increase...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2018-01, Vol.54 (5), p.479-482
Main Authors: Trusov, Lev A, Gorbachev, Evgeny A, Lebedev, Vasily A, Sleptsova, Anastasia E, Roslyakov, Ilya V, Kozlyakova, Ekaterina S, Vasiliev, Alexander V, Dinnebier, Robert E, Jansen, Martin, Kazin, Pavel E
Format: Article
Language:English
Subjects:
Aluminum
Calcium
Coercivity
Crystal structure
Strontium
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Summary:We demonstrate that the simultaneous substitution of calcium and aluminum for strontium and iron in strontium hexaferrite results in a significant increase of coercivity up to a record high of 21.3 kOe. We propose that the effect is originated from a crystal structure distortion causing an increase of the magnetocrystalline anisotropy. Ca-Al double-substituted strontium hexaferrites exhibit record-high coercivities up to 21.3 kOe.
ISSN:1359-7345
1364-548X
DOI:10.1039/c7cc08675j