Paper Title:
Electric Field-Induced Unmixing in Mixed Ferrite Spinel (Co,Fe)3O4
  Abstract

Unmixing of a semiconducting ferrite spinel, (Co0.203Fe0.797)3O4 in an electric field was examined at 1200oC in its disorder regimes of prevailing (cation) vacancies and interstitials, respectively. It has been found that Co becomes enriched at the cathode in the interstitial-prevailing regime and at the anode in the vacancy-prevailing regime, but to much smaller a degree than expected. This confirms that the direction and degree of unmixing is governed by the difference in electrochemical mobility of the competing cations, and the effective charges of the mobile cations are appreciably reduced from their formal ones by the cross effect between the mobile ions and electrons.

  Info
Periodical
Edited by
P. VINCENZINI and V. BUSCAGLIA
Pages
11-20
DOI
10.4028/www.scientific.net/AST.46.11
Citation
J. O. Hong, H.I. Yoo, "Electric Field-Induced Unmixing in Mixed Ferrite Spinel (Co,Fe)3O4", Advances in Science and Technology, Vol. 46, pp. 11-20, 2006
Online since
October 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: S.J. Yang, S.D. Kim, Ji Soon Kim
Abstract:Yttrium Iron Garnet (YIG) has been used as an important material in the Circulator/Isolator which is used in RF communication system, mobile...
1077
Authors: Giancarlo Bottoni
Abstract:The magnetic anisotropy of Co/Ti-doped Ba ferrite particles for application in recording media is studied. A method which deduces the...
2534
Authors: Rodolfo A. Pérez, Patrick Gas, Philippe Maugis
Abstract:Experiments of niobium diffusion at infinite dilution and Nb reaction-diffusion in pure iron and in ferrites with different amounts of...
163
Authors: László Trif, Nikoletta Molnár-Vörös, Gyula Tolnai, István E. Sajó, Sándor Mészáros, Erika Kálmán
Abstract:New chemical synthesis procedure for the preparation of nickel zinc doped W-type hexagonal barium ferrite and aluminium doped yttrium-iron...
167
Authors: Jian Jun Gu, Li Hu Liu, Yun Kai Qi, Qin Xu, Hui Yuan Sun
Abstract:The spinel ferrite system Ni1-xMnxFe2O4 (x = 0.0, 0.25, 0.5, 0.75) nanowire...
1799