High-Pressure Synthesis and Correlation between Structure, Magnetic, and Dielectric Properties in LiNbO3-Type MnMO3 (M = Ti, Sn)

被引：73

作者：

Aimi, Akihisa ^{[1
]}

Katsumata, Tetsuhiro ^{[2
]}

Mori, Daisuke ^{[1
]}

Fu, Desheng ^{[3
]}

Itoh, Mitsuru ^{[4
]}

Kyomen, Toru ^{[5
]}

Hiraki, Ko-ichi ^{[6
]}

Takahashi, Toshihiro ^{[6
]}

Inaguma, Yoshiyuki ^{[1
]}

机构：

[1] Gakushuin Univ, Dept Chem, Fac Sci, Toshima Ku, Tokyo 1718588, Japan

[2] Tokai Univ, Dept Chem, Fac Sci, Kanagawa 2591292, Japan

[3] Shizuoka Univ, Div Global Res Leaders, Naka Ku, Hamamatsu, Shizuoka 4328561, Japan

[4] Tokyo Inst Technol, Mat & Struct Lab, Kanagawa 2268503, Japan

[5] Gunma Univ, Grad Sch Engn, Dept Chem & Chem Biol, Kiryu, Gunma 3768515, Japan

[6] Gakushuin Univ, Dept Phys, Fac Sci, Toshima Ku, Tokyo 1718588, Japan

来源：

INORGANIC CHEMISTRY | 2011年 / 50卷 / 13期

基金：

日本学术振兴会;

关键词：

PHASE-TRANSITION; ILMENITE; MNSNO3; MNTIO3; ZNSNO3;

D O I：

10.1021/ic201006q

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

LiNbO3-type MnMO3 (M = Ti, Sn) were synthesized under high pressure and temperature; their structures and magnetic, dielectric, and thermal properties were investigated; and their relationships were discussed. Optical second harmonic generation and synchrotron powder X-ray diffraction measurements revealed that both of the compounds possess a polar LiNbO3-type structure at room temperature. Weak ferromagnetism due to canted antiferromagnetic interaction was observed at 25 and 50 K for MnTiO3 and MnSnO3, respectively. Anomalies in the dielectric permittivity were observed at the weak ferromagnetic transition temperature for both the compounds, indicating the correlation between magnetic and dielectric properties. These results indicate that LiNbO3-type compounds with magnetic cations are new candidates for multiferroic materials.

引用

页码：6392 / 6398

页数：7

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