Ca–Al double-substituted strontium hexaferrites with giant coercivity

Lev A. Trusov; Evgeny A. Gorbachev; Vasily A. Lebedev; Anastasia E. Sleptsova; Ilya V. Roslyakov; Ekaterina S. Kozlyakova; Alexander V. Vasiliev; Robert E. Dinnebier; Martin Jansen; Pavel E. Kazin

doi:10.1039/C7CC08675J

Ca–Al double-substituted strontium hexaferrites with giant coercivity†

Lev A. Trusov,

*^a Evgeny A. Gorbachev,

^b Vasily A. Lebedev,

^a Anastasia E. Sleptsova,^b Ilya V. Roslyakov,^a Ekaterina S. Kozlyakova,

^c Alexander V. Vasiliev,^a Robert E. Dinnebier,

^d Martin Jansen

^d and Pavel E. Kazin

^a

Author affiliations

* Corresponding authors

^a Faculty of Chemistry, Moscow State University, Moscow, Russia
E-mail: trusov@inorg.chem.msu.ru

^b Faculty of Materials Science, Moscow State University, Moscow, Russia

^c Faculty of Physics, Moscow State University, Moscow, Russia

^d Max Planck Institute for Solid State Research, Stuttgart, Germany

Abstract

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.

Chemical Communications

Ca–Al double-substituted strontium hexaferrites with giant coercivity†

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Ca–Al double-substituted strontium hexaferrites with giant coercivity

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