Abstract
The dielectric constant of quantum paraelectric EuTiO3, which contains Eu2+ with S=7/2 spin and Ti4+, 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 ∼7% 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.
| Original language | English |
|---|---|
| Article number | 054415 |
| Pages (from-to) | 544151-544154 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 64 |
| Issue number | 5 |
| Publication status | Published - 2001 Aug 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Coupling between magnetism and dielectric properties in quantum paraelectric EuTiO3 . / Katsufuji, Takuro; Takagi, H.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 64, No. 5, 054415, 01.08.2001, p. 544151-544154.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Coupling between magnetism and dielectric properties in quantum paraelectric EuTiO3
AU - Katsufuji, Takuro
AU - Takagi, H.
PY - 2001/8/1
Y1 - 2001/8/1
N2 - The dielectric constant of quantum paraelectric EuTiO3, which contains Eu2+ with S=7/2 spin and Ti4+, 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 ∼7% 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 EuTiO3, which contains Eu2+ with S=7/2 spin and Ti4+, 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 ∼7% 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.
UR - http://www.scopus.com/inward/record.url?scp=0035424020&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035424020&partnerID=8YFLogxK
M3 - Article
VL - 64
SP - 544151
EP - 544154
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 5
M1 - 054415
ER -