Formation enthalpies of Sn clusters:: a calorimetric investigation

被引：17

作者：

Bachels, T ^{[1
]}

Schäfer, R ^{[1
]}

机构：

[1] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 300卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(98)01376-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The formation of a bulk Sn layer from a molecular beam of Sn, clusters has been directly investigated with a picojoule-sensitive calorimeter. The calorimeter is based on a microfabricated composite cantilever, and it makes use of the bimetallic effect. The formation enthalpy Delta H-f,H-298 for Sn(s) --> (I/N) Sn-N(g) has been determined from the released heat during the deposition of a distribution of Sn, clusters with a mean cluster size of [N] = 150 atoms. For this Sn cluster size distribution one obtains a formation enthalpy per atom of Delta H-f,H-298 = 0.45 +/- 0.19 eV. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：177 / 182

页数：6

共 21 条

[1] Microfabricated cantilever-based detector for molecular beam experiments [J].