SIZE-DEPENDENT MELTING TEMPERATURE OF INDIVIDUAL NANOMETER-SIZED METALLIC CLUSTERS

被引：465

作者：

CASTRO, T ^{[1
]}

REIFENBERGER, R ^{[1
]}

CHOI, E ^{[1
]}

ANDRES, RP ^{[1
]}

机构：

[1] PURDUE UNIV, SCH CHEM ENGN, W LAFAYETTE, IN 47907 USA

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.42.8548

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Gold and silver clusters with diameters in the nanometer-size range were grown in an inert-gas beam and deposited on the end of a tungsten field emitter. The field-emission current from an individual cluster is used to study a size-dependent change in shape of the cluster as a function of temperature. Three experimental signatures indicate an abrupt change in cluster shape at a temperature below the bulk melting point. This temperature is found to depend on cluster size and is in agreement with a thermodynamic model for cluster melting, provided the cluster diameter is greater than 2 nm. © 1990 The American Physical Society.

引用

页码：8548 / 8556

页数：9

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