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Lu, Xinying; Liang, Kun; Gu, Shou Ren; Zheng, Yan‐Kang; Fang, Hongsheng.

doi:10.1023/a:1018604504171

Cited by 60 publications

(21 citation statements)

References 10 publications

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“…The decrease in oxygen vacancies on high-temperature treatments results in the lowering of the ferromagnetic order and magnetic moment. There are more vacancies at 800 • C, due to the mixed phase (tetragonal phase as an additional phase), also reported in another study [25]. The decrease in oxygen vacancies on high-temperature treatments are also observed in other studies conducted for photoluminescence [26,27].…”

Section: Resultssupporting

confidence: 79%

Room-temperature ferromagnetism in Ca and Mg stabilized cubic zirconia bulk samples and thin films prepared by pulsed laser deposition

Dimri¹,

Khanduri²,

Kooskora³

et al. 2012

J. Phys. D: Appl. Phys.

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We report room-temperature ferromagnetism in Ca and Mg stabilized zirconia bulk samples and thin films. Powders were prepared by the citrate-combustion route, and thin films grown on silicon substrates by the pulsed laser deposition technique. X-ray diffractograms and Raman spectra at room temperature reveal the formation of cubic phase zirconia. The observed ferromagnetism is robust at room temperature in both bulk as well as in thin film samples, although it is weaker in thin films. The origin of the ferromagnetism can be related to oxygen vacancies created due to divalent (calcium and magnesium) substitution for tetravalent zirconium ions.

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Section: Resultssupporting

confidence: 79%

Room-temperature ferromagnetism in Ca and Mg stabilized cubic zirconia bulk samples and thin films prepared by pulsed laser deposition

Dimri¹,

Khanduri²,

Kooskora³

et al. 2012

J. Phys. D: Appl. Phys.

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“…In the present study, it is likely that iron oxide is anchored to the defect centers. This result, where there is a restriction in the motion of defect centers, facilitates stabilization of the tetragonal phase [23].…”

Section: Powder X-ray Diffractionmentioning

confidence: 94%

Effect of iron oxide loading on the phase transformation and physicochemical properties of nanosized mesoporous ZrO2

Basahel

Ali

Narasimharao

et al. 2012

Materials Research Bulletin

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“…Moisture adsorption on the tetragonal ZrO 2 nanoparticle surface reduces the surface energy difference between the tetragonal and monoclinic phases. The critical size for the tetragonal-to-monoclinic phase transformation is reduced under this condition [equation (17)] leading to phase transformation.…”

Section: Role Of Water Vapourmentioning

confidence: 99%

Mechanisms of room temperature metastable tetragonal phase stabilisation in zirconia

Shukla¹,

Seal²

2005

International Materials Reviews

373

241

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Mechanisms of tetragonal phase stabilisation, at room temperature, in nanocrystalline (,100 nm), submicrometre-sized (100 nm-1 mm), and bulk zirconia (ZrO 2 ) (.1 mm) are reviewed in detail. The merits, demerits and scope of each individual model are outlined. The analysis of the literature shows that, although the mechanism of tetragonal phase stabilisation in bulk ZrO 2 is well understood, the room temperature tetragonal phase stabilisation mechanism in undoped, nanocrystalline ZrO 2 is controversial. Various proposed models, based on surface energy (nanocrystallite size), strain energy, internal and external hydrostatic pressure, structural similarities, foreign surface oxides, anionic impurities, water vapour and lattice defects (oxygen ion vacancies), are discussed in detail. It is proposed that generation of excess oxygen ion vacancies within the nanocrystalline ZrO 2 is primarily responsible for the room temperature tetragonal phase stabilisation, below a critical size. Hence, the mechanism of tetragonal phase stabilisation in nanocrystalline ZrO 2 appears to be the same as that in doped ZrO 2 (at room temperature) and undoped ZrO 2 (at higher temperature).

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Cited by 60 publications

References 10 publications

Room-temperature ferromagnetism in Ca and Mg stabilized cubic zirconia bulk samples and thin films prepared by pulsed laser deposition

Room-temperature ferromagnetism in Ca and Mg stabilized cubic zirconia bulk samples and thin films prepared by pulsed laser deposition

Effect of iron oxide loading on the phase transformation and physicochemical properties of nanosized mesoporous ZrO2

Mechanisms of room temperature metastable tetragonal phase stabilisation in zirconia

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