Nuclear magnetic resonance and acoustic investigations of the melting-freezing phase transition of gallium in a porous glass

被引：26
作者：
Borisov, BF
Charnaya, EV
Hoffmann, WD
Michel, D
Shelyapin, AV
Kumzerov, YA
机构：
[1] UNIV LEIPZIG, FAC PHYS & GEOSCI, D-04103 LEIPZIG, GERMANY
[2] AF IOFFE PHYS TECH INST, RAN, ST PETERSBURG 194021, RUSSIA
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 16期
关键词：
SUPERFLUID TRANSITION; RESTRICTED GEOMETRY; GOLD PARTICLES; VYCOR GLASS; HE-4; LIQUID; SOLIDIFICATION; CLUSTERS; AEROGEL; HELIUM;
D O I：
10.1088/0953-8984/9/16/010
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The melting-freezing phase transition of gallium in a porous glass was studied by NMR and acoustical techniques. A depression of the freezing and melting phase transition temperatures and a pronounced hysteresis in the melting-freezing processes were found. An intricate Ga-71 NMR lineshape for liquid gallium was observed with a temperature coefficient of the Knight shift more than twice that measured for the bulk melt. The results are discussed on the basis of the Gibbs-Thompson equation and by means of a geometric freezing model.
引用
收藏
页码：3377 / 3386
页数：10
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