2011
DOI: 10.1063/1.3662044
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Fabrication and magnetic properties of Fe and Co co-doped ZrO2

Abstract: We investigate the effects of Fe and Co co-doping on the magnetic and electronic properties of ZrO2 ceramics prepared by a sol-gel method, and study their dependence on the annealing temperature. Dilute Fe and Co co-doping into ZrO2 exhibits ferromagnetic behavior at room temperature for annealing temperatures above 900 °C, accompanying the phase transition from tetragonal to monoclinic structure in ZrO2. The electronic structures are studied by x-ray absorption spectroscopy and Mössbauer spectroscopy, which s… Show more

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Cited by 21 publications
(15 citation statements)
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“…Different nanostructures of undoped ZrO 2 were prepared by catalyst-assisted PLD and all structures were found to possess ferromagnetic behavior [ 9 ]. Ferromagnetism was also observed in annealed Co and Fe co-doped ZrO 2 , prepared by the sol–gel method [ 10 ]. Samples of Mn- and Fe-stabilized cubic zirconia were obtained by a co-precipitation method and no ferromagnetism was observed in such samples [ 11 ].…”
Section: Introductionmentioning
confidence: 99%
“…Different nanostructures of undoped ZrO 2 were prepared by catalyst-assisted PLD and all structures were found to possess ferromagnetic behavior [ 9 ]. Ferromagnetism was also observed in annealed Co and Fe co-doped ZrO 2 , prepared by the sol–gel method [ 10 ]. Samples of Mn- and Fe-stabilized cubic zirconia were obtained by a co-precipitation method and no ferromagnetism was observed in such samples [ 11 ].…”
Section: Introductionmentioning
confidence: 99%
“…Магнитные и физико-химические свойства этих нанокомпозитов сильно зависят от способа получения, размера частиц, концентрации и химической связи между наночастицами и матрицей. Для получения гранулированных наноматериалов широко используются методы мокрой химии, такие как золь-гель метод, спрей-пиролиз, микроэмульсионный метод [4][5][6], магнетронное распыление, импульсное лазерное осаждение, ионная имплантация [7][8][9], совместное осаждение [10] и т. д. Однако поиск новых способов создания гибридных пленочных нанокомпозитов является актуальным. В предыдущих наших работах [11][12][13][14][15][16][17] рассматривается новый подход к синтезу ферромагнитных нанокомпозитных пленочных материалов основанный на инициировании термитных реакций между пленками окислов 3d-металлов Fe 2 O 3 , Co 3 O 4 и металлами In, Zr, Zn, Al, окислы которых являются широкозонными полупроводниками или диэлектриками.…”
Section: Introductionunclassified
“…The main method used for the stabilization of the ZrO2 tetragonal phase is the introduction of stabilization components in the zirconia lattice, such as Mg, Ce, Fe, Y, etc. [11][12][13][14]. At nanoscale level, the metastable phase formation in ZrO2 can be induced by including in the oxide structure some vacancy defects [11].…”
Section: Introductionmentioning
confidence: 99%
“…[11][12][13][14]. At nanoscale level, the metastable phase formation in ZrO2 can be induced by including in the oxide structure some vacancy defects [11]. Although, the stabilization effect of the oxygen vacancies in tetragonal ZrO2 is not yet well understood (contrary to cubic ZrO2) [14], the concentration of oxygen vacancies in the lattice required to stabilize the tetragonal phase is found in phases like ZrO1.97 and ZrO1.98 for tetragonal zirconia doped by rare-earth elements, mainly cerium (Ce) and yttrium (Y).…”
Section: Introductionmentioning
confidence: 99%