The Raman spectra of the hexagonal and cubic (spinel) forms of Ge3N4:: an experimental and theoretical study

被引：34

作者：

Deb, SK

Dong, J

Hubert, H

McMillan, PF ^{[4
]}

Sankey, OF

机构：

[1] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA

[2] Arizona State Univ, Mat Res Ctr, Tempe, AZ 85287 USA

[3] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA

[4] Arizona State Univ, Dept Chem & Biochem & Solid State Sci, Ctr Solid State Sci, Tempe, AZ 85287 USA

来源：

SOLID STATE COMMUNICATIONS | 2000年 / 114卷 / 03期

基金：

美国国家科学基金会;

关键词：

chemical synthesis; phonons; inelastic light scattering;

D O I：

10.1016/S0038-1098(00)00017-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The Raman spectra of the hexagonal (beta) and cubic spinel (gamma) forms of Ge3N4, newly obtained by high-pressure synthesis, have been measured and are compared with zone-center phonon frequencies calculated using first principles methods in a plane wave pseudopotential local density approximation. The observed and calculated phonon frequencies are in excellent agreement and we use the calculated values to perform mode assignment for both the phases. Both phases show all the expected Raman active modes. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：137 / 142

页数：6

共 10 条

[1]

CHOPELAS A, 1991, PHYS CHEM MINER, V18, P279

[2] HIGH-TEMPERATURE RAMAN INVESTIGATION OF ORDER-DISORDER BEHAVIOR IN THE MGAL2O4 SPINEL [J].

CYNN, H ;

SHARMA, SK ;

COONEY, TF ;

NICOL, M .

PHYSICAL REVIEW B, 1992, 45 (01) :500-502

[3]

FRASS LM, 1973, J CHEM PHYS, V58, P3585

[4] ABINITIO MOLECULAR-DYNAMICS FOR LIQUID-METALS [J].

KRESSE, G ;

HAFNER, J .

PHYSICAL REVIEW B, 1993, 47 (01) :558-561

[5]

Leinenweber K, 1999, CHEM-EUR J, V5, P3076, DOI 10.1002/(SICI)1521-3765(19991001)5:10<3076::AID-CHEM3076>3.0.CO

[6]

2-D

[7]

MCMILLAN P, 1987, AM MINERAL, V72, P361

[8] Synthesis of a cubic Ge3N4 phase at high pressures and temperatures [J].

Serghiou, G ;

Miehe, G ;

Tschauner, O ;

Zerr, A ;

Boehler, R .

JOURNAL OF CHEMICAL PHYSICS, 1999, 111 (10) :4659-4662

[9]

SOMAYAZULU MS, 1999, IN PRESS P AIRAPT 17

[10] Synthesis of cubic silicon nitride [J].

Zerr, A ;

Miehe, G ;

Serghiou, G ;

Schwarz, M ;

Kroke, E ;

Riedel, R ;

Fuess, H ;

Kroll, P ;

Boehler, R .

NATURE, 1999, 400 (6742) :340-342

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