Phonon quarticity induced by changes in phonon-tracked hybridization during lattice expansion, and its stabilization of rutile TiO2
نویسنده
چکیده
Tian Lan,1, ∗ C. W. Li,2 O. Hellman,1 J. A. Muñoz,1 H. Smith,1 D. L. Abernathy,3 and B. Fultz1 1Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, California 91125, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA (Dated: February 17, 2015)
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بررسی جابهجایی و پهنشدگی فونونهای حساس به رامان نانو بلورهای TiO2 در فاز روتایل در دماهای بالا
TiO2 nanocrystallites in rutile phase with 68 nm dimensions have been synthesized by sol–gel technique. The structure and particle sizes have been determined by X-ray diffracttion and SEM characterizations. Different factors in the rutile phase broadenings and shifts of the Raman modes at different temperatures, especially at high temperatures, have been studied.The effect of particle size, non...
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