Hydriding characteristics of praseodymium thin films

被引：10

作者：

Mor, GK ^{[1
]}

Malhotra, LK ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Thin Film Lab, New Delhi 110016, India

来源：

THIN SOLID FILMS | 2000年 / 359卷 / 01期

关键词：

lanthanides; hydrides; physical vapour deposition; electrical properties and measurements;

D O I：

10.1016/S0040-6090(99)00708-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A metal to insulator transition has been observed in praseodymium films during in situ hydrogen loading (p(H2) = 1.015 x 10(5) Pa) at temperatures greater than or equal to 323 K. The transition can be observed at room temperature, if praseodymium films an coated with Palladium dots before hydriding. The transition is accompanied by a change in optical appearance, i.e. metallic grey praseodymium films change to yellowish transparent praseodymium hydride films. Glancing angle X-ray diffraction (GAXRD) patterns have revealed the fee structure of the films with an average lattice parameter of 5.611 Angstrom. An indirect optical bandgap of 3.0 eV has been obtained for praseodymium hydride films from reflectance and transmittance data. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：28 / 32

页数：5

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