Suppression of ferroelectricity and quantum fluctuations in Ru-doped TbMnO3

被引：16

作者：

Guo, Y. Y. ^{[1
]}

Guo, Y. J. ^{[1
,2
]}

Zhang, N. ^{[1
]}

Lin, L. ^{[1
]}

Liu, J. -M. ^{[1
,3
,4
]}

机构：

[1] Nanjing Univ, Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Jiangsu Inst Educ, Dept Phys, Nanjing 210013, Jiangsu, Peoples R China

[3] S China Normal Univ, Adv Mat Lab, Sch Phys, Guangzhou 510006, Guangdong, Peoples R China

[4] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2012年 / 106卷 / 01期

关键词：

Ruthenium alloys - Ruthenium - Ferroelectricity - Binary alloys - Terbium alloys;

D O I：

10.1007/s00339-011-6575-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the effects of Ru-doping in polycrystalline TbMn1-x Ru (x) O-3 (xa parts per thousand currency sign0.10) on the multiferroicity. It is observed that the Ru substitution gradually melts away the dielectric anomaly at the ferroelectric transition point and the ferroelectricity by suppressing the polarization, accompanied with a surprising low-temperature dielectric plateau. While it is reasonable to observe the significant suppression of ferroelectricity, owing to the fact that the Ru-doping disrupts the Mn spiral spin ordering and reduces the Mn-Mn spin angle, quantum fluctuations associated with the Ru substitution, responsible for the low-temperature dielectric plateau, seems to be significant.

引用

页码：113 / 117

页数：5

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