Influence of annealing temperature on surface morphology and magnetic properties of Ni0.7Zn0.3Fe2O4 ferrite thin films

Zi, Zhenfa; Lei, Hechang; Zhu, Xuetao; Wang, Bo; Zhang, Shoubao; Zhu, Xuebin; Song, Wenhai; Sun, Yan

doi:10.1016/j.mseb.2010.01.033

Cited by 17 publications

(4 citation statements)

References 16 publications

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“…We observed a monotonous increase of 4πM S in Co 0.3 Zn 0.7 Fe 2 O 4 thin films with the increase in T S or T A . A similar behavior of 4πM S has been reported in many ferrite thin films including that of pure Co ferrite [1-3, 5, [23][24][25]. This increase in 4πM S is ascribed to an increase of average grain size with the increase in T S or T A .…”

Section: Discussionsupporting

confidence: 82%

Anomalously large magnetic moment in nanocrystalline Co_0.3Zn_0.7Fe₂O₄thin films

et al. 2017

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Co 0.3 Zn 0.7 Fe 2 O 4 nanocrystalline thin films were deposited by pulsed laser ablation technique on amorphous quartz substrate. These films were as deposited at different substrate temperatures (T S ) varying from room temperature (RT) to 750°C. The RT deposited films were ex situ annealed at annealing temperatures (T A ) ranging from 150°C to 750°C. The magnetic properties of the films were observed to depend on T A and T S . A spontaneous magnetization (4πM S ) value higher than that of the bulk was observed in the as deposited film at T S =750°C. This film also showed a higher Curie temperature than bulk. These results were explained based on the grain growth and cation distribution in thin films. Experimental detailsCo 0.3 Zn 0.7 Fe 2 O 4 thin films were PLD onto fused quartz substrate using the third harmonic (355 nm) of Nd:YAG laser at a 10 Hz repetition rate and 5-6 ns pulse width. Laboratory synthesized single phase Co 0.3 Zn 0.7 Fe 2 O 4 target, prepared by solid state reaction, was used for the thin film deposition. A laser beam energy density of 2.5 J cm −2 was used to ablate the target, placed at a distance of 4.5 cm from the substrate. The PLD chamber was evacuated to a base pressure of 4.6×10 −6 mbar using turbo molecular pump prior to the deposition. The ferrite thin films were deposited in O 2 atmosphere at a pressure of 0.16 mbar at various substrate temperatures

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Section: Discussionsupporting

confidence: 82%

Anomalously large magnetic moment in nanocrystalline Co_0.3Zn_0.7Fe₂O₄thin films

et al. 2017

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“…For oxalate method A large value of H c is attributed to the increase of the average particle size This can be understood by the fact that as the domain contains many grains, the magnetocrystalline anisotropy is averaged over many grains and various orientation. The large anisotropy leads to a increase in coercivity with increasing grain sizes [39].…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Investigation of Cation Distribution and Microstructure of Nano Ferrites Prepared by Different Wet Methods

Ateia

Salah

El-Bassuony

2015

J Inorg Organomet Polym

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Nanostructure ferrite of composition Ni 0.5 Zn 0.5 Cr 0.1 Fe 1.9 O 4 was prepared by sol-gel, co-precipitation, citrate-gel, flash and oxalate precursor methods. Structural and micro structural analysis of the investigated samples were carried out by X-rays diffractometer (XRD), infrared spectroscopy, transmission electron microscopy (TEM) and atomic force microscope. It was observed that the lattice parameter of cubic spinel was constant, and the positions of both tetrahedral and the octahedral bands had the fixed positions for all methods except flash and oxalate precursor methods. These results were explained on the basis of theoretical calculation of cation distribution for Ni-Zn-Cr ferrite. The average crystalline sizes of the investigated samples deduced by TEM were in good agreement with the one estimated by XRD. The above results were correlated to the results of magnetic measurements of the investigated samples.

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“…Besides those, the Ni-P deposit possesses characteristics in magnetism, i.e, low coercivity and high permeability, so it is also a remarkable soft magnetic material [10]. It is well known that annealing could enhance soft magnetic property in some cases [11]. However, for Ni-P coating on Si, many researchers reported that traditional annealing at high temperature may led to the reaction between Ni and Si and bring byproduct NiSi phase, which lead to the decrease of saturation magnetization [12,13].…”

Section: Introductionmentioning

confidence: 99%

Effect of rapid magnetic field annealing in vacuum on the structure and magnetic properties of Ni-P films

Yuan

Mao

et al. 2016

Integrated Ferroelectrics

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2016) Effect of rapid magnetic field annealing in vacuum on the structure and magnetic properties of Ni-P films, Integrated Ferroelectrics, 170:1, 33-42, ABSTRACT Ni-P thin films are deposited on silicon wafer by electroless method and treated by different annealing processes. The structure of as-deposited film exhibits the mixture of amorphous and microcrystalline phases, and the M s is 150 emu/cc and H c is 24 Oe. Rapid thermal annealing (RTA) could avoids the impurity and the M s of the sample reached the maximum value about 413 emu/cc after RTA process at 350°C. A magnetic field about 5000 Oe was applied during RTA process, which resulted in higher crystallization temperature, higher value of M s and lower value of H c .

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Influence of annealing temperature on surface morphology and magnetic properties of Ni0.7Zn0.3Fe2O4 ferrite thin films

Cited by 17 publications

References 16 publications

Anomalously large magnetic moment in nanocrystalline Co_0.3Zn_0.7Fe₂O₄thin films

Anomalously large magnetic moment in nanocrystalline Co_0.3Zn_0.7Fe₂O₄thin films

Investigation of Cation Distribution and Microstructure of Nano Ferrites Prepared by Different Wet Methods

Effect of rapid magnetic field annealing in vacuum on the structure and magnetic properties of Ni-P films

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Influence of annealing temperature on surface morphology and magnetic properties of Ni0.7Zn0.3Fe2O4 ferrite thin films

Cited by 17 publications

References 16 publications

Anomalously large magnetic moment in nanocrystalline Co0.3Zn0.7Fe2O4thin films

Anomalously large magnetic moment in nanocrystalline Co0.3Zn0.7Fe2O4thin films

Investigation of Cation Distribution and Microstructure of Nano Ferrites Prepared by Different Wet Methods

Effect of rapid magnetic field annealing in vacuum on the structure and magnetic properties of Ni-P films

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Product

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Anomalously large magnetic moment in nanocrystalline Co_0.3Zn_0.7Fe₂O₄thin films

Anomalously large magnetic moment in nanocrystalline Co_0.3Zn_0.7Fe₂O₄thin films