Low-Temperature Phase Transition in AgNbO3

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	Low-Temperature Phase Transition in AgNbO3
	Zhang, TS ; Zhang, CY ; Wang, L ; Chai, YS ; Shen, SP ; Sun, Y ; Yuan, HM ; Feng, SH
刊名	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
	2014
卷号	97 期号:6 页码:1895
ISSN号	0002-7820
通讯作者	Yuan, HM (reprint author), Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China.
中文摘要	AgNbO3 is a weak ferroelectric with antiferroelectricity due to Ag displacements at room temperature. A dielectric anomaly at 250K, which has not been observed previously, reveals a transition between the weak ferroelectric phase (M1 phase) at the higher temperature and a new ferroelectric phase (M0 phase) at the lower temperature in AgNbO3. This transition was further verified by the pyroelectric current and differential scanning calorimetry measurements. The spontaneous polarization value is found to be much larger in the M0 phase than that of the M1 phase. A well-defined saturating ferroelectric hysteresis loop can also be observed at 77K, showing a remnant polarization value of 2.4C/cm2 and a coercive field of 25kV/cm. All the above results indicate that the larger polarization of the M0 phase mainly comes from the alignment of the antiferroelectric displacements of the Ag atoms.
资助信息	Foundation of the National Natural Science Foundation of China [20771042, 90922034, 11374347]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59287]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhang, TS,Zhang, CY,Wang, L,et al. Low-Temperature Phase Transition in AgNbO3[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2014,97(6):1895.
APA	Zhang, TS.,Zhang, CY.,Wang, L.,Chai, YS.,Shen, SP.,...&Feng, SH.(2014).Low-Temperature Phase Transition in AgNbO3.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,97(6),1895.
MLA	Zhang, TS,et al."Low-Temperature Phase Transition in AgNbO3".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 97.6(2014):1895.