Anisotropic magnetic properties in Åkermanite Sr2MSi2O7 (M=Co, Mn) crystals

Mitsuru Akaki; Tomoya Tadokoro; Hideki Kuwahara; Takumi Kihara; Masashi Tokunaga

doi:10.3938/jkps.62.1812

Anisotropic magnetic properties in Åkermanite Sr₂MSi₂O₇ (M=Co, Mn) crystals

Mitsuru Akaki, Tomoya Tadokoro, Hideki Kuwahara, Takumi Kihara, Masashi Tokunaga

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We have investigated the magnetic and the dielectric properties of åkermanite Sr₂CoSi₂O₇ and Sr₂MnSi₂O₇ single crystals. Sr₂CoSi₂O₇ shows a canted antiferromagnetism with a large magnetic anisotropy at temperatures below 7 K. By applying a magnetic field along the [110] direction, an electric polarization emerges along the c axis at temperatures below the magnetic transition temperature. In high magnetic fields, the saturation magnetization becomes enhanced only when the electric polarization appears. In contrast, the magnetization of Sr₂MnSi₂O₇ is isotropic at all temperatures, and its magnetic-field-induced electric polarization is very small. These results suggest that the electronic configuration of the transition-metal ion is of crucial importance for the appearance of electric polarization.

Original language	English
Pages (from-to)	1812-1814
Number of pages	3
Journal	Journal of the Korean Physical Society
Volume	62
Issue number	12
DOIs	https://doi.org/10.3938/jkps.62.1812
Publication status	Published - Jul 2013
Externally published	Yes

Keywords

Antiferomagnetism
Cobaltite
Magnetoelectric effects
Manganite
Multiferoics

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.3938/jkps.62.1812

Cite this

@article{df5a65aaf0af4c42a4154e379a2d0cd6,

title = "Anisotropic magnetic properties in {\AA}kermanite Sr2MSi2O7 (M=Co, Mn) crystals",

abstract = "We have investigated the magnetic and the dielectric properties of {\aa}kermanite Sr2CoSi2O7 and Sr2MnSi2O7 single crystals. Sr2CoSi2O7 shows a canted antiferromagnetism with a large magnetic anisotropy at temperatures below 7 K. By applying a magnetic field along the [110] direction, an electric polarization emerges along the c axis at temperatures below the magnetic transition temperature. In high magnetic fields, the saturation magnetization becomes enhanced only when the electric polarization appears. In contrast, the magnetization of Sr2MnSi2O7 is isotropic at all temperatures, and its magnetic-field-induced electric polarization is very small. These results suggest that the electronic configuration of the transition-metal ion is of crucial importance for the appearance of electric polarization.",

keywords = "Antiferomagnetism, Cobaltite, Magnetoelectric effects, Manganite, Multiferoics",

author = "Mitsuru Akaki and Tomoya Tadokoro and Hideki Kuwahara and Takumi Kihara and Masashi Tokunaga",

note = "Funding Information: This work was partly supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan, through a Grant-in-Aid for Scientific Research (23340096).",

year = "2013",

month = jul,

doi = "10.3938/jkps.62.1812",

language = "English",

volume = "62",

pages = "1812--1814",

journal = "Journal of the Korean Physical Society",

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publisher = "Korean Physical Society",

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TY - JOUR

T1 - Anisotropic magnetic properties in Åkermanite Sr2MSi2O7 (M=Co, Mn) crystals

AU - Akaki, Mitsuru

AU - Tadokoro, Tomoya

AU - Kuwahara, Hideki

AU - Kihara, Takumi

AU - Tokunaga, Masashi

N1 - Funding Information: This work was partly supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan, through a Grant-in-Aid for Scientific Research (23340096).

PY - 2013/7

Y1 - 2013/7

N2 - We have investigated the magnetic and the dielectric properties of åkermanite Sr2CoSi2O7 and Sr2MnSi2O7 single crystals. Sr2CoSi2O7 shows a canted antiferromagnetism with a large magnetic anisotropy at temperatures below 7 K. By applying a magnetic field along the [110] direction, an electric polarization emerges along the c axis at temperatures below the magnetic transition temperature. In high magnetic fields, the saturation magnetization becomes enhanced only when the electric polarization appears. In contrast, the magnetization of Sr2MnSi2O7 is isotropic at all temperatures, and its magnetic-field-induced electric polarization is very small. These results suggest that the electronic configuration of the transition-metal ion is of crucial importance for the appearance of electric polarization.

AB - We have investigated the magnetic and the dielectric properties of åkermanite Sr2CoSi2O7 and Sr2MnSi2O7 single crystals. Sr2CoSi2O7 shows a canted antiferromagnetism with a large magnetic anisotropy at temperatures below 7 K. By applying a magnetic field along the [110] direction, an electric polarization emerges along the c axis at temperatures below the magnetic transition temperature. In high magnetic fields, the saturation magnetization becomes enhanced only when the electric polarization appears. In contrast, the magnetization of Sr2MnSi2O7 is isotropic at all temperatures, and its magnetic-field-induced electric polarization is very small. These results suggest that the electronic configuration of the transition-metal ion is of crucial importance for the appearance of electric polarization.

KW - Antiferomagnetism

KW - Cobaltite

KW - Magnetoelectric effects

KW - Manganite

KW - Multiferoics

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