TY - JOUR
T1 - Coupling between magnetism and dielectric properties in quantum paraelectric (formula presented)
AU - Katsufuji, T.
AU - Takagi, H.
PY - 2001/1/1
Y1 - 2001/1/1
N2 - The dielectric constant of quantum paraelectric (formula presented) which contains (formula presented) with (formula presented) spin and (formula presented) has been measured under a magnetic field. The dielectric constant shows a critical decrease at the antiferromagnetic ordering of the Eu spins at 5.5 K, as well as a substantial change under a magnetic field (by (formula presented) with 1.5 T), indicating a strong coupling between the Eu spins and dielectric properties. We show that the variation of the dielectric constant is dominated by the pair correlation of the nearest-neighbor Eu spins, likely via the variation of the soft-phonon-mode frequency.
AB - The dielectric constant of quantum paraelectric (formula presented) which contains (formula presented) with (formula presented) spin and (formula presented) has been measured under a magnetic field. The dielectric constant shows a critical decrease at the antiferromagnetic ordering of the Eu spins at 5.5 K, as well as a substantial change under a magnetic field (by (formula presented) with 1.5 T), indicating a strong coupling between the Eu spins and dielectric properties. We show that the variation of the dielectric constant is dominated by the pair correlation of the nearest-neighbor Eu spins, likely via the variation of the soft-phonon-mode frequency.
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U2 - 10.1103/PhysRevB.64.054415
DO - 10.1103/PhysRevB.64.054415
M3 - Article
AN - SCOPUS:84870413223
SN - 1098-0121
VL - 64
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 5
ER -