Spin-phonon coupling in antiferromagnetic chromium spinels

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Spin-phonon coupling in antiferromagnetic chromium spinels

The temperature dependence of eigenfrequencies and intensities of the IR active modes has been investigated for the antiferromagnetic chromium spinel compounds CdCr2O4, ZnCr2O4, ZnCr2S4, ZnCr2Se4, and HgCr2S4 by IR spectroscopy for temperatures from 5 K to 300 K. At the transition into the magnetically ordered phases, and driven by spin-phonon coupling, most compounds reveal significant splitti...

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ژورنال

عنوان ژورنال: New Journal of Physics

سال: 2007

ISSN: 1367-2630

DOI: 10.1088/1367-2630/9/3/076