Magnetic and dielectric properties of R0.5Ca 0.5MnO3 (R = Eu-Lu)

Kenji Yoshii; Yusuke Hiramitsu; Yasuhiro Yoneda; Yuka Okajima; Yasuo Nishihata; Jun'ichiro Mizuki; Naoshi Ikeda

doi:10.1080/00150190902852208

Magnetic and dielectric properties of R_0.5Ca _0.5MnO₃ (R = Eu-Lu)

Kenji Yoshii, Yusuke Hiramitsu, Yasuhiro Yoneda, Yuka Okajima, Yasuo Nishihata, Jun'ichiro Mizuki, Naoshi Ikeda

研究成果 › 査読

8 被引用数 (Scopus)

抄録

The magnetic and dielectric properties of perovskite manganites R0.5Ca0.5MnO3 (R = Eu-Lu), which show charge ordering of the Mn-3d electrons below room temperature, have been investigated. Their dielectric constants were ∼1000-10000 at around room temperature. Inflections or peaks of temperature dependences of the dielectric constants were observed at around the charge-ordering temperatures. Analyses of tan δ for R = Eu-Lu and EXAFS spectra for R = Dy suggested that the dielectric properties of the present system are rooted in a special arrangement and transfer of the Mn-3d electrons. The two-peak structure of tan δ indicates that dielectric measurement can be used to observe homogeneity or inhomogeneity of sample, as mentioned in our previous paper on the ruthenium perovskite oxides.

本文言語	English
ページ（範囲）	183-190
ページ数	8
ジャーナル	Ferroelectrics
巻	379
号	1 PART 2
DOI	https://doi.org/10.1080/00150190902852208
出版ステータス	Published - 2009
イベント	9th Russian-CIS-Baltic-Japanese Symposium on Ferroelectricity, RCBJSF-9 - Vilnius 継続期間: 6月 15 2008 → 6月 19 2008

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学

文献へのアクセス

10.1080/00150190902852208

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引用スタイル

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abstract = "The magnetic and dielectric properties of perovskite manganites R0.5Ca0.5MnO3 (R = Eu-Lu), which show charge ordering of the Mn-3d electrons below room temperature, have been investigated. Their dielectric constants were ∼1000-10000 at around room temperature. Inflections or peaks of temperature dependences of the dielectric constants were observed at around the charge-ordering temperatures. Analyses of tan δ for R = Eu-Lu and EXAFS spectra for R = Dy suggested that the dielectric properties of the present system are rooted in a special arrangement and transfer of the Mn-3d electrons. The two-peak structure of tan δ indicates that dielectric measurement can be used to observe homogeneity or inhomogeneity of sample, as mentioned in our previous paper on the ruthenium perovskite oxides.",

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author = "Kenji Yoshii and Yusuke Hiramitsu and Yasuhiro Yoneda and Yuka Okajima and Yasuo Nishihata and Jun'ichiro Mizuki and Naoshi Ikeda",

note = "Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research (C) from the Ministry of Education, Culture, Sports, Science, and Technology.; 9th Russian-CIS-Baltic-Japanese Symposium on Ferroelectricity, RCBJSF-9 ; Conference date: 15-06-2008 Through 19-06-2008",

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T1 - Magnetic and dielectric properties of R0.5Ca 0.5MnO3 (R = Eu-Lu)

AU - Yoshii, Kenji

AU - Hiramitsu, Yusuke

AU - Yoneda, Yasuhiro

AU - Okajima, Yuka

AU - Nishihata, Yasuo

AU - Mizuki, Jun'ichiro

AU - Ikeda, Naoshi

N1 - Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research (C) from the Ministry of Education, Culture, Sports, Science, and Technology.

PY - 2009

Y1 - 2009

N2 - The magnetic and dielectric properties of perovskite manganites R0.5Ca0.5MnO3 (R = Eu-Lu), which show charge ordering of the Mn-3d electrons below room temperature, have been investigated. Their dielectric constants were ∼1000-10000 at around room temperature. Inflections or peaks of temperature dependences of the dielectric constants were observed at around the charge-ordering temperatures. Analyses of tan δ for R = Eu-Lu and EXAFS spectra for R = Dy suggested that the dielectric properties of the present system are rooted in a special arrangement and transfer of the Mn-3d electrons. The two-peak structure of tan δ indicates that dielectric measurement can be used to observe homogeneity or inhomogeneity of sample, as mentioned in our previous paper on the ruthenium perovskite oxides.

AB - The magnetic and dielectric properties of perovskite manganites R0.5Ca0.5MnO3 (R = Eu-Lu), which show charge ordering of the Mn-3d electrons below room temperature, have been investigated. Their dielectric constants were ∼1000-10000 at around room temperature. Inflections or peaks of temperature dependences of the dielectric constants were observed at around the charge-ordering temperatures. Analyses of tan δ for R = Eu-Lu and EXAFS spectra for R = Dy suggested that the dielectric properties of the present system are rooted in a special arrangement and transfer of the Mn-3d electrons. The two-peak structure of tan δ indicates that dielectric measurement can be used to observe homogeneity or inhomogeneity of sample, as mentioned in our previous paper on the ruthenium perovskite oxides.

KW - Dielectric property

KW - EXAFS

KW - Electron transfer

KW - Magnetic property

KW - Manganite

KW - Perovskite

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JO - Ferroelectrics

JF - Ferroelectrics

IS - 1 PART 2

T2 - 9th Russian-CIS-Baltic-Japanese Symposium on Ferroelectricity, RCBJSF-9

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