Low temperature preparation of orthoferrite thin-films by an inorganic sol-gel process

被引:23
作者
Rajendran, M [1 ]
Krishna, MG [1 ]
Bhattacharya, AK [1 ]
机构
[1] Univ Warwick, Sch Engn, Warwick Proc Technol Grp, Coventry CV4 7AL, W Midlands, England
关键词
orthoferrite; dip-coating; sol-gel;
D O I
10.1016/S0040-6090(00)01898-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Aqueous precursor sets of orthoferrites were prepared by room temperature processing of inexpensive commercially available metal salts. Crystalline thin-films of orthoferrites of general formula, LnFeO(3)(Ln = La, Nd, Sm, Gd, Dy, Er, Yb and Y) were prepared by dip-coating with the precursor sol and heating at 650 degreesC. All the films showed >80% transmittance independent of the rare earth ion. The optical band-gap was 3.1 eV and the refractive index was 1.61 +/- 0.02 independent of the rare earth ion. The films exhibited uniformity in thickness. mechanical and thermal integrity upon heating. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:230 / 233
页数:4
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