Dynamics of the insulator-conductor transition initiated by high pressure in ammonium halides / Tikhomirova GV,Babushkin AN // LOW TEMPERATURE PHYSICS. - 2004. - V. 30, l. 11. - P. 916-920.

ISSN/EISSN:

1063-777X / нет данных

Type:

Article; Proceedings Paper

Abstract:

A comparative study is made of the influence of high pressures (15-50 GPa) on the conductance of the ammonium halides NH4X (X=F, Cl, Br) at temperatures of 77 K and above. It is found that the application of high pressure induces a phase transition which is manifested in a sharp (jumplike) change in the resistance by several (more than three) orders of magnitude and is accompanied by hysteresis typical of a first-order phase transition. The values of the pressure P-c1 correlate with the density of the material and are approximately 40, 27, and 15 GPa for NH4F, NH4Cl, and NH4Br, respectively. The relaxation times of the resistance depend strongly on the pressure: in the transition region the relaxation time is increased significantly (from several hours to days). At pressures much higher than P-c1 it is several minutes. (C) 2004 American Institute of Physics.

Author keywords:

ELECTRICAL-CONDUCTIVITY; NEUTRON-DIFFRACTION; STRUCTURAL-CHANGES

DOI:

10.1063/1.1820024

Web of Science ID:

ISI:000225481500017

Соавторы в МНС:

Другие поля

Поле	Значение
Month	NOV
Note	15th Ural International Winter School onPhysics of Semiconductors, Kyshtym, RUSSIA, FEB 16-21, 2004
Organization	Russian Acad Sci, Inst Met Phys Ural Div
Publisher	AMER INST PHYSICS
Address	CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Language	English
Keywords-Plus	ELECTRICAL-CONDUCTIVITY; NEUTRON-DIFFRACTION; STRUCTURAL-CHANGES
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	Galina.Tikhomirova@usu.ru
ResearcherID-Numbers	Babushkin, Alexey/M-8198-2016
Number-of-Cited-References	16
Usage-Count-Since-2013	11
Journal-ISO	Low Temp. Phys.
Doc-Delivery-Number	876FI