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In this work, Fe65Co35 alloy which has maximum saturation magnetization (Ms) among all metal magnetic materials was chosen to make Fe65Co35-SiO2 granular films, and the magnetic properties in whole composition were studied. The results show that good high frequency soft magnetic films were obtained by carefully controlling the microstructure. A serious (Fe65Co35)x(SiO2)1-x granular films are fabricated...
The structure and magnetism and their correlation for the NiAs-type Mn50(Te50-xSbx) (NA-MTS) pseudo-single crystal films. The composition of the films was determined by X-ray fluorescence analysis. The crystal structure was investigated by XRD method. The magnetic properties such as saturation magnetic moments, magnetic transition temperatures and saturation magnetization were measured by a SQUID...
Since the Nd3(Fe,Ti)29 phase with monoclinic symmetry and space group A2/m was discovered, much attention has been paid to the substitution of Co for Fe in R3(Fe,TM)29 intermetallic compounds. Recently, it has been shown that in 3:29 compounds Co substitution has a significant effect on their structural and magnetic properties, especially on the nature of the magnetocrystalline anisotropy. Normally,...
This work concerns the influence of layer array on the transmittance of 1-D MPCs, consisting of dielectric Al2O3 and magnetic Bi: YIG layers. Bi: YIG is an ideal candidate for MPCs in the visible and the far-IR ranges, where it experiences little absorption. Since the optical constants of Bi:YIG at lambda = 720 nm is well known, we have investigated the properties in a wavelength region centered at...
In this paper, the effect of substituting Fe partially by the 4d element Nb on the structural and magnetic properties of Tb0.27Dy0.73Fe2 is reported. Polycrystalline compounds of Tb0.27Dy0.73Fe2-xNbx (x = 0, 0.05, 0.1 and 0.2) were prepared by arc melting the constituent elements (rare earths-99.9 % pure, Fe and Nb -99.95 % pure) in an arc furnace under argon atmosphere. The ingots were annealed in...
In the present study, A series of polycrystalline chromium-substituted cobalt ferrite samples with compositions of CoCrxFe2-xO4 were prepared by standard powder ceramic techniques. The microstructure and final composition of the samples were characterized using a scanning electron microscope with energy-dispersive X-ray spectroscopy (EDX). The crystal structure of the samples was determined by X-ray...
In this study, PtMn nanoparticles were synthesized via a chemical method. After post-annealing at the temperature range of 500~700degC, different grain sizes were obtained. It was found the coercivity, measured at 5 K, decreased with increasing grain size. The exchange-bias was also observed at 5 K under a field-cooling process. The particle size and composition of as-synthesized PtMn nanoparticles...
High anisotropy low loss hexagonal M-type barium ferrite (BaM) thin film materials are promising candidates for use in MMIC devices such as circulators and isolators. The films are prepared by standard PLD and post-deposition annealing techniques. While progress has been made in the PLD growth of such films, there is a wide variance in ferromagnetic resonance (FMR) linewidths and film quality in general...
In this paper, the structure, magnetic properties and magnetic entropy change of Er2-xCexFe17 compounds have been studied. The results show that even crystal structure of the compounds is still the Th2Ni17-type hexagonal by Ce substituting for Er in Er2Fe17 compound, the exchange coupling coefficients have been changed between the Er and Fe sublattices, resulting in the Curie temperature of (Er,Ce)...
This article report on the effect of substituting other transition metals on the magnetostriction and Curie temperature of R(Zn1-xFex) (R=Tb, Dy) polycrystalline alloys. The X-ray diffraction analysis confirmed that the DyZn1-xFex alloys consisted of nearly a single Dy(Zn,Fe) phase with the CsCl-type cubic structure in the range 0<x<0.15. When x>0.15, they consist of a Dy(Zn,Fe) phase with...
The authors synthesized ultra-small magnetite (Fe3O4) nanoparticles using aqueous coprecipitation. The crystal structure of the samples was analyzed by X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). The magnetic properties of the magnetite nanocrystals were investigated using a SQUID magnetometer.
In this paper, the characteristics of the osmium (Os) in textured CoFe/IrMn magnetic film multilayer structure system is investigated and the characteristics of buffer layer and diffusion barrier is also reported. To examine the magnetic behavior, magneto-optical Kerr effect (MOKE) and vibrating sample magnetometer (VSM) are used and XRD is used to examine the crystal structure. As a result, a textured...
This paper reports the magnetoelectric properties of CoFe2O4-BaTiO3 core-shell structure composites. Crystalline structures of the composites were investigated by X-ray diffractometer (XRD). Magnetic properties were studied using a pulse field magnetometer. Magnetostriction was measured using strain gauge method. AC susceptibility and ME coefficient were investigated using lock-in technique in which...
The authors discuss and investigate the characteristics structural, magnetic and current-perpendicular-to-the-plane giant magnetoresistance (CPPGMR) properties of Fe/Co superlattices on an Au electrode. RHEED images showed the surface reconstruction during deposition and indicated that Fe/Co 59 multilayers (MLs) on Au electrode has B2 ordered structure at 400degC substrate temperature.
In this paper, the effect of Co substitution for Fe on the magnetic properties of (Sm0.4Pr0.6)3 (Fe1-xCox)27.5 Ti1.5 [x = 0.1, 0.2, 0.3, 0.4] is reported. All the compounds were prepared by arc melting the constituent elements under Ar atmosphere, then heat treated in an evacuated (10-6 torr) and sealed quartz tube at 1050degC for five days and subsequently quenched in ice-water mixture. Crystal...
Ordered LiFeO2 powders were prepared by the sol-gel method. The crystal structures were measured by X-ray diffraction (XRD). Thermal analysis such as thermogravimetry analysis (TGA) and differential thermal analysis (DTA) were performed on the dried powder obtained from the LiFeO2 precursor solution. The particle morphology of the samples was observed using a scanning electron microscope (SEM). Magnetic...
We investigated the dependence of magnetic properties with composition in nanocrystalline Mn-Zn ferrites. Ferrite crystals were synthesized by a modified coprecipitation route where nucleation and crystal growth conditions were controlled during the reaction of 0.011M Fe(III) and 0.055M[Zn(II) + Mn(II)] solutions under alkaline conditions. When doping, suitable amounts of Gd(III) or Eu(III) salts...
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