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A.c. conduction mechanism in LiFe1/2Mn1/2VO4

✍ Scribed by Moti Ram

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 513 KB
Volume: 405
Category: Article
ISSN: 0921-4526
DOI: 10.1016/j.physb.2010.02.009

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✦ Synopsis

The LiFe 1/2 Mn 1/2 VO 4 compound was prepared by a standard solid-state reaction technique. The dielectric and electrical conductivity behavior of the compound over a wide frequency range (100 Hz-1 MHz) at temperatures (25-475 1C) was studied by complex impedance spectroscopy (CIS) technique. Studies of frequency and temperature dependence of dielectric constant and tangent loss of LiFe 1/2 Mn 1/2 VO 4 exhibit a dispersive behavior at low frequencies. The variation of a.c. conductivity as a function of frequency at some selected temperatures obeys Jonscher's universal power law governed by the relation ½sðoÞ ¼ s d:c: þ Ao n .

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