Growth temperature dependence of the hysteretic behavior of Ni0.5Zn0.5Fe2O4 thin films

Prado, J. M.; Gómez, Manuel González; Mendoza, Aminta

doi:10.1016/j.jmmm.2009.04.015

Cited by 9 publications

(4 citation statements)

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“…In addition, the EPD process has advantages of high deposition rate and low postannealing temperature over sputter deposition [13], pulsed laser deposition [14], sol-gel process [15], and screen printing technique [16].…”

Section: Resultsmentioning

confidence: 99%

Impedance Matching of Electrically Small Antenna with Ni-Zn Ferrite Film

Lee¹,

Hong²,

Lee³

et al. 2013

Journal of Magnetics

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We demonstrate that a partial loading of Ni 0.5 Zn 0.5 Fe 2 O 4 (Ni-Zn ferrite) film remarkably improves impedance matching of electrically small Ba 3 Co 2 Fe 24 O 41 (Co 2 Z) hexaferrite antenna. A 3 µm thick Ni-Zn ferrite film was deposited on a silicon wafer by the electrophoresis deposition process and post-annealed at 400 o C. The fabricated Ni-Zn ferrite film has saturation magnetization of 268 emu/cm 3 and coercivity of 89 Oe. A partial loading of the Ni-Zn ferrite film on the Co 2 Z hexaferrite helical antenna increases antenna return loss to 24.7 dB from 9.0 dB of the Co 2 Z antenna. Experimental results show that impedance matching and maximum input power transmission to the antenna without additional matching elements can be realized, while keeping almost the same size as the Co 2 Z antenna size.

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Section: Resultsmentioning

confidence: 99%

Impedance Matching of Electrically Small Antenna with Ni-Zn Ferrite Film

Lee¹,

Hong²,

Lee³

et al. 2013

Journal of Magnetics

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“…Substrate heating at 350uC, however, induces the formation of minor cubic phases such as Ta-Mo (111), ( 110) and (221) as well. 16 It seems that the Ta-Mo phase was formed due to the reaction between Ta and Mo atomics in the ion bombardment at the process of substrate heating. Also, there is a little change in XRD spectra for polycrystalline Ta-Mo coatings deposited at 450uC, which indicates that the sputtering temperatures lower than 450uC produce partial recrystallinity of Ta-Mo microstructures.…”

Section: Resultsmentioning

confidence: 99%

“…It reveals that the full recrystallinity of Ta–Mo microstructures at planes of Ta–Mo (111) and (221) occurred in the coatings deposited at 550°C. This is due to the fact that the increase in ion bombardment accelerates the surface moving and surface diffusion, and thus improves the grain quality of the Ta–Mo (111) and (221) metastable phases 17…”

Section: Resultsmentioning

confidence: 99%

“…Also the grains seem to be rather compact and dense as also found for the higher temperature 350°C. The change in grain sizes is associated to nucleation process followed by a diffusion mechanism at the higher energy 17. It is also reasonable to assume that increasing deposition temperatures accelerate the mobility of pin holes in the coatings through thermally activated nucleation and growth processes on the substrates 18…”

Section: Resultsmentioning

confidence: 99%

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Mechanical and corrosion properties of Ta–Mo coatings by heating processes

Zhou

et al. 2012

Surface Engineering

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In this research, substrate heating process has been used for the production of Ta-Mo high temperature protective coatings. The microstructures of the alloy coatings have been studied through X-ray diffraction and scanning electron microscopy. Mechanical and corrosion properties of different alloys have been investigated in both low and high temperature heating processes. Substrate heating processes (from 250 to 550uC) were expected to produce partially recrystallised and fully recrystallised microstructures. Higher heating temperature results in recrystallised microstructures, but adversely affects the density of atoms V t and bond energy G. The behaviour of low and high temperature heating processes on corrosion and mechanical properties of Ta-Mo nanostructured coatings was studied.

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