Magnetic influence on frequency of soft-phonon mode in incipient ferroelectric EuTiO3

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Magnetic influence on the frequency of the soft-phonon mode in the incipient ferroelectric EuTiO3

The dielectric constant of the incipient ferroelectric EuTiO3 exhibits a sharp decrease at about 5.5K, at which temperature antiferromagnetic ordering of the Eu spins simultaneously appears, indicating coupling between the magnetism and dielectric properties. This may be attributed to the modification of the soft-phonon mode, T1μ, which is the main contribution to the large dielectric constant,...

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ژورنال

عنوان ژورنال: Journal of Applied Physics

سال: 2003

ISSN: 0021-8979,1089-7550

DOI: 10.1063/1.1540226