Raman spectroscopic study of high-pressure behavior of Ag3[Co(CN)6]

被引：21

作者：

Rao, Rekha ^{[1
]}

Achary, S. N. ^{[2
]}

Tyagi, A. K. ^{[2
]}

Sakuntala, T. ^{[3
]}

机构：

[1] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400085, Maharashtra, India

[2] Bhabha Atom Res Ctr, Div Chem, Bombay 400085, Maharashtra, India

[3] Strateg Planning Grp, Dept Atom Energy, Bombay 400001, Maharashtra, India

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 05期

关键词：

NEGATIVE THERMAL-EXPANSION; INDUCED PHASE-TRANSITION; PRUSSIAN BLUE ANALOGS; ZRW2O8; SCATTERING; SPECTRA; MODE; FE; CO;

D O I：

10.1103/PhysRevB.84.054107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ Raman spectroscopic studies have been carried out on Ag-3[Co(CN)(6)] at high pressures up to 16 GPa. From the pressure dependence of the Raman frequencies, the mode Gruneisen parameters in the trigonal and the monoclinic phases are obtained. Besides the reported trigonal-to-monoclinic transition at 0.2 GPa, it is observed that the compound shows pressure-induced amorphization above 13 GPa. The recovered sample shows features characteristic of amorphous carbon nitride, indicating the decomposition of the parent compound in the pressure-reducing cycle. Temperature dependence of the mode frequencies over the range 80-290 K is also investigated, from which the modes that are more anharmonic than other modes are identified.

引用

页数：6

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