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The polar transition of Li-doped and Nb-doped KTaO3: Comparative analysis from hard-phonon raman spectra

 

作者: P. Calvi,   P. Camagni,   E. Giulotto,   L. Rollandi,  

 

期刊: Radiation Effects and Defects in Solids  （Taylor Available online 1995）
卷期: Volume 137, issue 1-4  

页码: 199-203

 

ISSN:1042-0150

 

年代: 1995

 

DOI:10.1080/10420159508222720

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Raman investigations have been performed on K0.984Li0.016TaO3and KTa0.976Nb0.024O3single crystals, in order to follow the peculiarities of non-ferroelectric phonons, which may be indicative of a different evolution of microscopic order during the polar transition. Specific features in the Nb case confirm a ferroelectric behaviour, whereas in the Li-doped sample the results are in agreement with a dipole glass transition.

 

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