INTERNAL-FRICTION STUDY ON THE ORDER-DISORDER PHASE-TRANSITION OF FULLERITE FILM

被引：6

作者：

GU, M

WANG, YN

YANG, P

ZANG, WC

YAN, F

GU, G

WANG, WN

DOU, YW

FENG, D

机构：

[1] National Laboratory of Solid State Microstructures, Nanjing University, Nanjing

来源：

PHYSICS LETTERS A | 1992年 / 170卷 / 02期

关键词：

D O I：

10.1016/0375-9601(92)90782-H

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Corresponding to a downward cusp of the elastic modulus, a narrow lambda-shaped internal friction peak appears at 251 K for a fullerite film on a fused SiO2 substrate, having a very small thermal hysteresis (< 1 K). X-ray diffraction shows an anomalous change of the lattice constant a near 251 K. The mechanism of the lambda-shaped internal friction peak at 251 K may be attributed to the stress-induced motion of the interphase boundary for the order-disorder transition and due to the preferential distribution of fluctuating new phase components with an equivalent orientation. The effect of oxygen in air has been primarily explored.

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页码：107 / 110

页数：4

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