Comparative Study of the Hydrogenation of Cu and TM (Mn,Fe,Ni)-Codoped ZnO Nanocomposite DMS

Dakhel, A.A.

doi:10.1007/s10948-015-2997-6

Cited by 7 publications

(4 citation statements)

References 34 publications

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“…3b) which might intermediate the interchange coupling of the Co spins via electron contamination of the matrix. This shows a clear visibility of FM in agreeing with the other studies [8][9][10]. Both the samples are then heated for approximately two hrs in air at 550 C (heated 1 sample) and appreciable depression in magnetic moment is observed (Fig.…”

Section: Magnetization Datasupporting

confidence: 91%

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Assessment of the H2 Followed by Air Sintering of Co-doped In2O3 Based Diluted Magnetic Semiconductors

Mukherji¹,

Mathur²,

Samariya³

et al. 2017

J. Nano- Electron. Phys.

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The study shows the influence of Co doping, sintering in hydrogen atmosphere and reheating on magnetic properties of In2O3.The In0.97Co0.03O samples were prepared by solid state reaction method. XRD patterns shows that Co ions take position of at the In3+ sites. The investigations at room temperature (RT) concludes that the Co doped In2O3 sample had achieved overlapped paramagnetic (PM) properties conquering the diamagnetic (DM) properties of In2O3. Additionally, it was found that the ferromagnetism (FM) is noticeably induced via H2annealing at 300 K. This study also depicts that the sample is finally reverted to the PM state after further long sintering.

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Section: Magnetization Datasupporting

confidence: 91%

“…The sintering condition plays a crucial role on the magnetic properties of DMSs. It is scholastically verified that the sintering in hydrogen atmosphere boosts the magnetic saturation and coercivity [8,9]. At present, only few investigations reported on of Codoped In2O3 nanoparticles.…”

Section: Introductionmentioning

confidence: 84%

Assessment of the H2 Followed by Air Sintering of Co-doped In2O3 Based Diluted Magnetic Semiconductors

Mukherji¹,

Mathur²,

Samariya³

et al. 2017

J. Nano- Electron. Phys.

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“…Figure 6 shows the hysteresis loops for the as- respectively) acts as a shallow donor impurity; thus, probable to deliver additional conduction electrons [47]. This also confirms the exchange interactions amid Co ions mediated by oxygen vacancies created by hydrogen sintering in agreement of Sharma et al (2007) [48]. Moreover, it is attributed that hydrogenation of doped samples creates oxygen vacancy defects which contain bound magnetic polarons.…”

Section: Magnetic Propertiessupporting

confidence: 62%

Study of the hydrogenation and re-heating of Co-doped ZnO and In2O3 Nano composites

Mukherji

Mathur

Samariya

et al. 2018

Adv Compos Hybrid Mater

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Nanocomposite samples of zinc oxide (ZnO) and indium oxide (In 2 O 3 ) doped with Co (at 1.5% molar concentration) are synthesized through conventional solid-state reaction technique. These samples are taken in a quartz tube and placed in reduction furnace for post-annealing in the presence of hydrogen for~10 h at around 550°C. The X-ray diffraction (XRD) study confirms the formation of hexagonal wurtzite structure for ZnO, Zn H exhibited a perceptible ferromagnetic behavior at 300 K whereas it overturns significantly after long air sintering. An effort has been made to fit the experiential M-H data of hydrogenated samples to the Bound Magnetic Polaron (BMP) model. MATLAB-based simulations have been performed to validate the homogeneity in particle distribution of the samples evinced through SEM micrographs. A multivariate assessment viz. hierarchical cluster analysis is also executed to corroborate and strengthen the experimental findings of magnetic properties.

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“…Actually, the oxide semiconductors exhibit various advantages such as wide band gap suitable for applications with short wavelength light, transparency and dyeability with pigments, high n-type carrier concentration, capability to be grown at low temperature even on plastic substrate, ecological safety, durability and low cost [1][2][3][4][5][6][7][8][9]. In addition, large electronegativity of oxygen is expected to produce strong p-d exchange coupling between band carriers and localized spins.…”

Section: Introductionmentioning

confidence: 99%

Study of the Hydrogenation and Re-heating of Co-doped In<sub>2</sub>O<sub>3</sub> based Diluted Magnetic Semiconductors

Mukherji¹,

Mathur²,

Samariya³

et al. 2017

JAN

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Abstract. In this work, the Co 2+ ions doping effect on the magnetic behaviour of In 2 O 3 nanoparticles (NPs) has been discussed. The In 0.94 Co 0.06 O sample was prepared by solid state reaction method. According to XRD, the single crystalline phase was identified as the cubic bixbyite crystal structure and doping effect of prepared NPs. The magnetic study at room temperature (RT) revealed that the prepared Co doped In 2 O 3 sample had achieved overlapped paramagnetic (PM) properties defeating the diamagnetic (DM) properties of In 2 O 3 . Furthermore, it was found that the ferromagnetic (FM) is clearly induced by post-annealing in hydrogen atmosphere at 50 and 300 K. This study also depicts that the sample is finally returned to the PM state after re-heating.

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Comparative Study of the Hydrogenation of Cu and TM (Mn,Fe,Ni)-Codoped ZnO Nanocomposite DMS

Cited by 7 publications

References 34 publications

Assessment of the H2 Followed by Air Sintering of Co-doped In2O3 Based Diluted Magnetic Semiconductors

Assessment of the H2 Followed by Air Sintering of Co-doped In2O3 Based Diluted Magnetic Semiconductors

Study of the hydrogenation and re-heating of Co-doped ZnO and In2O3 Nano composites

Study of the Hydrogenation and Re-heating of Co-doped In<sub>2</sub>O<sub>3</sub> based Diluted Magnetic Semiconductors

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