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A new method is developed to measure the magnetizations in each layer of a multi-layered garnet film. This method combines a single VSM and multiple FMR measurements to completely characterize the magnetic properties of layers. This method can be immediately extended to the case of multiple layers or different materials, as long as the requirement for resolving the FMR absorption peaks for different...
In this paper, a new type of high-sensitivity magnetometer that can surpass SQUID magnetometers operating in liquid-helium in sensitivity and spatial resolution is discussed. The sensitivity of atomic magnetometers is determined by the electron spin relaxation time and the number of alkali-metal atoms. The relaxation time is usually limited by spin-exchange collisions between atoms and drops at higher...
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 work we present experimental results and a discussion of the structural and magnetic features leading to a minimum magnetic correlation length of the order of 20 nm thick films of Ni2MnGa deposited on MgO substrates. The study is conducted using a vibrating sample magnetometer (VSM) for the magnetic characterization and an atomic force-magnetic force microscope (AFM-MFM) setup, which allows...
We describe two techniques in this paper that use vector magnetometry to determine the straightness and the edge characteristics of arrays of long, straight, thin-film stripes. A variety of measurement techniques are available for characterizing bulk materials, thin films and even thin film interfaces, but few techniques are available for characterization of thin film edges. The magnetic properties...
In this study, TbFeCo with the composition satisfying high saturation magnetization and low coercivity has been selected then the coercivity and magnetization reversal mechanism has been manipulated by using patterned underlayer. At first 50 nm Al films have been deposited on glass substrate then anodization has been carried out at different voltage to have different surface morphology. Tb18Fe70Co...
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...
In this study, granular films were prepared by reactive RF magnetron sputtering. The film was deposited on Si (100) substrates. The magnetic properties (coercivity) were measured by a vibrating sample magnetometer (VSM). The electrical resistivity (p) of the thin film was determined by means of a four-point probe method. The film structures were investigated by X-ray diffractometry (XRD) and transmission...
The magnetic and structural properties of highly chemically ordered epitaxial (Fe1-xMnx)50Pt50 L10 (0lesxles0.4) thin films are investigated. Highly chemically ordered (Fe1-xMnx)50Pt50 (0lesxles0.4) is deposited epitaxially on MgO (100) substrates at 550degC by magnetron co-sputtering from two alloy targets. The epitaxial quality, degree of chemical ordering, and lattice constants for the epitaxial...
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...
In this study, Nd2Fe14B thin films with perpendicular anisotropy at the thickness as thin as 5 nm have been successfully prepared. The suitability of the films as perpendicular magnetic recording media has been discussed. The films were characterized by X-ray diffractometry (XRD), vibrating sample magnetometer (VSM) with maximum applied field 24 kOe, and scanning electron microscopy (SEM). The chemical...
In this study, magnetic and microwave absorbing properties of M-hexaferrites have been investigated in Ka-band frequencies with the substitution of Ti+4 and Co+2 ions into Fe+3 sites. The powders of composition BaFe12-2xTixCoxO19 were prepared by calcining at 1250 ringC in air. Saturation magnetization and coercivity were measured using a vibration sample magnetometer.
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