First principles study of structural stability, electronic and related properties of (NH4)2SO4

被引：9
|
作者：
Andriyevsky, B. [1 ,2 ]
Doll, K. [2 ]
Jansen, M. [2 ]
机构：
[1] Koszalin Univ Technol, Fac Elect & Comp Sci, PL-75453 Koszalin, Poland
[2] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2010年 / 71卷 / 03期
关键词：
Inorganic compounds; Ab-initio calculations; Elastic properties; Electronic structure; Ferroelectricity; FERROELECTRIC PHASE-TRANSITION; AMMONIUM-SULFATE; AB-INITIO; SPONTANEOUS POLARIZATION; DIELECTRIC-PROPERTIES; MIXED-CRYSTALS; (NH4)2SO4; DIFFRACTION; NANO2;
D O I：
10.1016/j.jpcs.2009.12.090
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The electronic structure and related physical properties of crystalline ammonium sulfate, (NH4)(2)SO4, have been studied using the first principles code CRYSTAL06 at the B3LYP level of theory. The title compound has been found to possess one stable and three metastable configurations, all within the polar space group Pra2(1) (no. 33). Two of the metastable polymorphs are newly predicted and have not yet been observed experimentally. The different configurations show considerably varying magnitudes of the spontaneous polarization P-s. All coefficients of the elastic stiffness tensor, C-kl and elasto-electrical tensor, e(ki) have been calculated for the first time and have been found to agree satisfactorily with experimental data, as far as available. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：357 / 363
页数：7
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