نتایج جستجو برای: magnetic hysteresis
تعداد نتایج: 349501 فیلتر نتایج به سال:
A Sensorless Method for the Identification of Asymmetric Hysteresis Loops of Ferromagnetic Materials
The sensorless determination of the dynamic hysteresis loop of the magnetic materials, and in particular those of magnetic plates, can be obtained under ac symmetric conditions in a relatively simple way. This paper proposes a new digital method and instrument for the sensorless determination of the dynamic hysteresis loop under ac asymmetric conditions, in the presence of a dc flux polarizatio...
For FeNi/FeMn bilayers, the angular dependence of exchange bias shows hysteresis between clockwise and counterclockwise rotations, as a new signature. The hysteresis decreases for thick antiferromagnet layers. Calculations have clearly shown that the orientation of antiferromagnet spins also exhibits hysteresis between clockwise and counterclockwise rotations. This furnishes an interpretation o...
Purposeful ligand design was used for the synthesis of eight new 1D iron(II) spin crossover coordination polymers aiming for cooperative spin transitions with hysteresis. The results from magnetic measurements and X-ray structure analysis show that the combination of rigid linkers and a hydrogen bond network between the 1D chains is a promising tool to reach this goal. Five of the eight new sam...
We utilize antiferromagnetically coupled bilayer structures to magnetically tune hysteresis loop properties. Key element of this approach is the non-overlapping switching fi eld distribution of the two magnetic layers that make up the system: a hard magnetic CoPtCrB layer (HL) and a soft magnetic CoCr layer (SL). Both layers are coupled antiferromagnetically through an only 0.6-nm-thick Ru inte...
A challenge in molecular spintronics is to control the magnetic coupling between magnetic molecules and magnetic electrodes to build efficient devices. Here we show that the nature of the magnetic ion of anchored metal complexes highly impacts the exchange coupling of the molecules with magnetic substrates. Surface anchoring alters the magnetic anisotropy of the cobalt(II)-containing complex (C...
Smart materials display coupling between electrical, magnetic, thermal and elastic behavior. Hence these materials have inherent sensing and actuation capacities. However, the hysteresis inherent to smart materials presents a challenge in control of these actuators/sensors. Inverse compensation is a fundamental approach to cope with hysteresis, where one aims to cancel out the hysteresis effect...
The traditional magnetic storage mechanisms ~both analog and digital! apply an external field signal H(t) to a hysteretic magnetic material, and read the remanent magnetization M (t), which is ~roughly! proportional to H(t). We propose a new analog method of recovering the signal from the magnetic material, making use of the shape of the hysteresis loop M (H). The field H , ‘‘stored’’ in a regi...
In this work, zinc ferrite magnetic and zinc ferrite-graphene oxide nanocomposite were synthesized through a facile hydrothermal method and dye removal capability as an adsorbent were studied. Fourier transform infrared spectroscopy FT-IR, X-ray diffraction XRD and scanning electron microscopy SEM were used to characterize the synthesized nanocomposite. The UV-Vis results showed that the additi...
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