Dielectric behavior of LiNi3/5Fe1/5Cu1/5VO4 ceramics

✍ Scribed by Moti Ram

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 545 KB
• Volume: 405
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2010.06.038

✦ Synopsis

Solution-based chemical method was used to prepare the LiNi 3/5 Fe 1/5 Cu 1/5 VO 4 ceramics. Its structural and dielectric properties were investigated. X-ray diffraction analysis shows an orthorhombic unit cell structure of the compound with lattice parameters a¼ 9.6329 (23) Å, b¼ 6.8527 (23) Å and c¼ 5.4667 (23) Å. Frequency dependence of dielectric constant (e r ) at various temperatures exhibits a dispersive behavior at low frequencies. Temperature dependence of e r at various frequencies indicates the dielectric anomalies in e r .

Frequency dependence of tangent loss at various temperatures indicates the presence of dielectric relaxation in the material. The variation of relaxation time as a function of temperature follows the Vogel-Fulcher law.