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

School of Science

Research output: Contribution to journal › Conference article › peer-review

9 Citations (Scopus)

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.

Original language	English
Pages (from-to)	183-190
Number of pages	8
Journal	Ferroelectrics
Volume	379
Issue number	1 PART 2
DOIs	https://doi.org/10.1080/00150190902852208
Publication status	Published - 2009
Event	9th Russian-CIS-Baltic-Japanese Symposium on Ferroelectricity, RCBJSF-9 - Vilnius, Lithuania Duration: Jun 15 2008 → Jun 19 2008

Keywords

Dielectric property
EXAFS
Electron transfer
Magnetic property
Manganite
Perovskite

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1080/00150190902852208

Cite this

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

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.",

keywords = "Dielectric property, EXAFS, Electron transfer, Magnetic property, Manganite, Perovskite",

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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volume = "379",

pages = "183--190",

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TY - JOUR

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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DO - 10.1080/00150190902852208

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AN - SCOPUS:77749246440

SN - 0015-0193

VL - 379

SP - 183

EP - 190

JO - Ferroelectrics

JF - Ferroelectrics

IS - 1 PART 2

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

Y2 - 15 June 2008 through 19 June 2008

ER -