Size-dependent melting properties of small tin particles: Nanocalorimetric measurements

被引：778

作者：

Lai, SL ^{[1
]}

Guo, JY ^{[1
]}

Petrova, V ^{[1
]}

Ramanath, G ^{[1
]}

Allen, LH ^{[1
]}

机构：

[1] UNIV ILLINOIS, CTR MICROANAL MAT, URBANA, IL 61801 USA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.77.99

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For the first time, the latent heat of fusion Delta H-m for Sn particles formed by evaporation on inert substrate with radii ranging from 5 to 50 nm has been measured directly using a novel scanning nanocalorimeter. A particle-size-dependent reduction of Delta H-m has been observed. An ''excluded volume'' is introduced to describe the latent heat of fusion from the enhanced surface melting of small particles. Melting point depression has also been found by our nanocalorimetric technique.

引用

页码：99 / 102

页数：4

共 28 条

[1] 1,000,000-DEGREES-C/S THIN-FILM ELECTRICAL HEATER - IN-SITU RESISTIVITY MEASUREMENTS OF AL AND TI/SI THIN-FILMS DURING ULTRA-RAPID THERMAL ANNEALING [J].