Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2754366
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Single-crystalline K0.5Bi0.5TiO3 nanowires have been fabricated by a large scale and facile molten salt synthetic method in a KCl medium. Pristine nanowires have diameters of about 40 nm and lengths exceeding 4 mu m, and they possess tetragonal perovskite structure. The K0.5Bi0.5TiO3 ceramics with a relative density above 98% can be fabricated from high quality nanowires. A broad dielectric peak with frequency dependent dielectric maximum temperature was observed, which can be well fitted by a modified Curie-Weiss law and a Vogel-Fulcher relationship. The suggested relaxor behavior in K0.5Bi0.5TiO3 composition is possibly due to the A-site compositional fluctuations at the nanolevel. (C) 2007 American Institute of Physics.
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