PRESSURE-INDUCED AMORPHIZATION OF CUGEO3

被引：6

作者：

YAMAGUCHI, H

ITO, T

OKA, K

OBARA, H

机构：

[1] Electrotechnical Laboratory, Tsukuba-si, Ibaraki 305

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 11期

关键词：

CUGEO3; PRESSURE-INDUCED; AMORPHIZATION; AMORPHOUS; X-RAY DIFFRACTION; DIFFERENTIAL THERMAL ANALYSIS; MAGNETIC PROPERTY;

D O I：

10.1143/JPSJ.62.3801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Amorphization under pressure has been observed in CuGeO3 at room temperature. It is apparently revealed by the change in color from blue to green. The amorphous feature in the green-colored phase was demonstrated by X-ray diffraction measurement, in which the Bragg peaks almost disappeared and a halolike background is observed. An exothermic reaction due to crystallization was observed at about 580-degrees-C in the amorphous phase by differential thermal analysis. Antiferromagnetism in the crystalline CuGeO3 is replaced by Curie-paramagnetism in the amorphous one.

引用

收藏

页码：3801 / 3804

页数：4

相关论文

共 10 条

[1] THE PRESSURE-INDUCED METALLIC AMORPHOUS STATE OF SNI4 .1. A NOVEL CRYSTAL-TO-AMORPHOUS TRANSITION STUDIED BY X-RAY-SCATTERING [J].

FUJII, Y ;

KOWAKA, M ;

ONODERA, A .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1985, 18 (04) :789-797

[2] OBSERVATION OF THE SPIN-PEIERLS TRANSITION IN LINEAR CU2+ (SPIN-1/2) CHAINS IN AN INORGANIC COMPOUND CUGEO3 [J].

HASE, M ;

TERASAKI, I ;

UCHINOKURA, K .

PHYSICAL REVIEW LETTERS, 1993, 70 (23) :3651-3654

[3] PRESSURE-INDUCED AMORPHIZATION OF CRYSTALLINE SILICA [J].

HEMLEY, RJ ;

JEPHCOAT, AP ;

MAO, HK ;

MING, LC ;

MANGHNANI, MH .

NATURE, 1988, 334 (6177) :52-54

[4] HIGH-PRESSURE RAMAN AND OPTICAL-ABSORPTION STUDIES ON LEAD PYRONIOBATE (PB2NB2O7) AND PRESSURE-INDUCED PHASE-TRANSITIONS [J].

JAYARAMAN, A ;

KOUROUKLIS, GA ;

COOPER, AS ;

ESPINOSA, GP .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (03) :1091-1094

[5] HIGH-PRESSURE RAMAN-STUDY OF THE VIBRATIONAL-MODES IN ALPO4 AND SIO2 (ALPHA-QUARTZ) [J].

JAYARAMAN, A ;

WOOD, DL ;

MAINES, RG .

PHYSICAL REVIEW B, 1987, 35 (16) :8316-8321

[6] MELTING ICE-I AT 77-K AND 10-KBAR - A NEW METHOD OF MAKING AMORPHOUS SOLIDS [J].

MISHIMA, O ;

CALVERT, LD ;

WHALLEY, E .

NATURE, 1984, 310 (5976) :393-395

[7]

Petrakovskii G. A., 1990, Soviet Physics - JETP, V71, P772

[8] PRESSURE-INDUCED NONCRYSTALLINE PHASE OF LIKSO4 [J].

SANKARAN, H ;

SIKKA, SK ;

SHARMA, SM ;

CHIDAMBARAM, R .

PHYSICAL REVIEW B, 1988, 38 (01) :170-173

[9] CRYSTAL STRUCTURE OF CUGEO3 [J].

VOLLENKL.H ;

WITTMANN, A ;

NOWOTNY, H .

MONATSHEFTE FUR CHEMIE, 1967, 98 (04) :1352-&

[10] STATIC AMORPHIZATION OF ANORTHITE AT 300-K AND COMPARISON WITH DIAPLECTIC GLASS [J].

WILLIAMS, Q ;

JEANLOZ, R .

NATURE, 1989, 338 (6214) :413-415