Mn-Stabilized Zirconia: From Imitation Diamonds to a New Potential High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>T</mml:mi><mml:mi>C</mml:mi></mml:msub></mml:math>Ferromagnetic Spintronics Material

Ostanin, S.; Ernst, A.; Sandratskii, L. M.; Bruno, P.; Däne, M.; Hughes, I. D.; Staunton, J. B.; Hergert, W.; Mertig, Ingrid; Kudrnovský, J.

doi:10.1103/physrevlett.98.016101

Cited by 97 publications

(72 citation statements)

References 30 publications

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“…For larger Mn concentrations, a small amount of antiferromagnetic interactions was found. The ferromagnetism predicted by the theoretical work of Ostanin [1] et al was not found even at low temperature. This can be explained by the low oxidation state of the manganese, which, in our case, was estimated to be between (II) and (III).…”

Section: Discussionmentioning

confidence: 87%

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Manganese‐Doped Zirconia Nanocrystals

et al. 2008

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In recent theoretical work, it was predicted that transition-metal-doped zirconia (ZrO2) can be ferromagnetic at room temperature with a dependence on the metal dopant and its oxidation state and concentration.[1] For experimental verification of these predictions, manganese-doped ZrO2 nanoparticles were synthesized. The synthesis was achieved by the benzyl alcohol route, which led to high-quality nanocrystals with uniform size and shape. The obtained particles present a homogeneous distribution of the magnetic ion. The crystallographic phase was studied by XRD, electron diffraction, and high-resolution TEM. The doping efficiency was determined at the macroscopic level by chemical analysis and at the nanoscale level by electron energy loss spectrometry. The local structure of the manganese ions in the ZrO2 matrix was characterized by electron paramagnetic resonance. Finally, the magnetic properties of the obtained nanocrystals were investigated by susceptibility measurements

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Section: Discussionmentioning

confidence: 87%

“…Materials possessing the required characteristics are scarce. As recently predicted by Ostanin et al, [1] doped ZrO 2 should be considered as one of the few suitable materials.…”

Section: Introductionmentioning

confidence: 95%

Manganese‐Doped Zirconia Nanocrystals

et al. 2008

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“…Theoretical calculations predict that Mn-doped ZrO 2 in the cubic structure has the potential to be a high Curie temperature DMO. 11 However, experimental results show no clear ferromagnetic signals at room temperature. 12,13 Material quests, especially using insulators such as ZrO 2 , HfO 2 , and Al 2 O 3 , are essential for functional spin-related ceramics.…”

Section: Introductionmentioning

confidence: 88%

Fabrication and magnetic properties of Fe and Co co-doped ZrO2

et al. 2011

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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 suggest that the Fe3+ and Co2+/Co3+ mixing states are dominant in Fe and Co co-doped ZrO2

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“…Recently a new class of DMS has been investigated, namely DMS based on high-k oxides, i.e. dilute magnetic oxides (DMO), after the experimental evidence of room temperature magnetism in transition metals (TMs) doped zirconia [5,6,7,8] (ZrO 2 ), hafnia [9,10] (Hf O 2 ), and titania [11,12] (T iO 2 ) and the theoretical prediction of high T c in TMs doped ZrO 2 [13,14].…”

Section: Introductionmentioning

confidence: 99%

Exploiting magnetic properties of Fe doping in zirconia

Sangalli¹,

Cianci²,

Lamperti³

et al. 2013

Eur. Phys. J. B

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Abstract. In this study we explore, both from theoretical and experimental side, the effect of F e doping in ZrO2 (ZrO2:F e). By means of first principles simulation we study the magnetization density and the magnetic interaction between F e atoms. We also consider how this is affected by the presence of oxygen vacancies and compare our findings with models based on impurity band [1] and carrier mediated magnetic interaction [2]. Experimentally thin films (≈ 20nm) of ZrO2:F e at high doping concentration are grown by atomic layer deposition. We provide experimental evidence that F e is uniformly distributed in the ZrO2 by transmission electron microscopy and energy dispersive X-ray mapping, while X-ray diffraction evidences the presence of the fluorite crystal structure. Alternating gradient force magnetometer measurements show magnetic signal at room temperature, however with low magnetic moment per atom. Results from experimental measures and theoretical simulations are compared.

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Mn-Stabilized Zirconia: From Imitation Diamonds to a New Potential High-TCFerromagnetic Spintronics Material

Cited by 97 publications

References 30 publications

Manganese‐Doped Zirconia Nanocrystals

Manganese‐Doped Zirconia Nanocrystals

Fabrication and magnetic properties of Fe and Co co-doped ZrO2

Exploiting magnetic properties of Fe doping in zirconia

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