Rotational Model for Constricted Magnetic Hysteresis Loops in Cubic Crystallographically Textured Materials

Abstract We report the observation of exchange bias in a ferromagnetic Ga0.94Mn0.06As0.77P0.23/ Ga0.94Mn0.06As bilayer, in which the easy axis in one layer is oriented out-of-plane, and in the other in-plane. Magnetization reversal in this system is explored using planar Hall effect (PHE) measurements under various initial conditions and with various field-cooling orientations. Our results show that the two magnetic layers are ferromagnetically exchange-coupled, and that such coupling results in pronounced exchange-bias-like shifts of magnetic hysteresis loops during reversal of in-plane magnetization. The presence of exchange bias in this system can be understood on the basis of magnetic closure domains formed in the layer with the out-of-plane easy axis.

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MAGNETIC PROPERTIES OF THE HIGH Tc SUPERCONDUCTORS BiSrCaCuO AND TlBaCaCuO

International Journal of Modern Physics B ◽

10.1142/s0217979289000051 ◽

1989 ◽

Vol 03 (01) ◽

pp. 77-85 ◽

Cited By ~ 3

Author(s):

Y. D. DAI ◽

C. LIN ◽

W. B. ZHANG ◽

S. Q. FENG ◽

X. ZHU ◽

...

Keyword(s):

Magnetic Properties ◽

Flux Pinning ◽

Magnetic Hysteresis ◽

Hysteresis Loops ◽

High Tc Superconductors ◽

Magnetic Current ◽

High Tc ◽

Bean Model ◽

Current Densities ◽

Magnetic Hysteresis Loops

Magnetic properties of the high T c superconductors BiSrCaCuO and TlBaCaCuO were investigated systematically. Magnetic current densities were calculated from magnetic hysteresis loops of bulk and powdered samples by Bean model. The results showed that flux pinning in these materials is much weaker than that in YBaCuO.

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A method for unmixing magnetic hysteresis loops

Journal of Geophysical Research Atmospheres ◽

10.1029/2011jb008859 ◽

2012 ◽

Vol 117 (B3) ◽

Cited By ~ 29

Author(s):

David Heslop ◽

Andrew P. Roberts

Keyword(s):

Magnetic Hysteresis ◽

Hysteresis Loops ◽

Magnetic Hysteresis Loops

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A Correlation between the Magnetic Behaviour and Damage of Metal Materials under Plastic Deformations

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.528.71 ◽

2012 ◽

Vol 528 ◽

pp. 71-78

Author(s):

E.S. Gorkunov

Keyword(s):

Structural Damage ◽

Tensile Deformation ◽

Magnetic Hysteresis ◽

Test Chamber ◽

Low Carbon Steel ◽

Hysteresis Loops ◽

Magnetic Behaviour ◽

Low Carbon ◽

Magnetic Hysteresis Loops ◽

Metal Materials

The effect of plastic tensile deformation on changes in density and magnetic behaviour has been studied on low-carbon steel specimens under hydrostatic pressure of 0.1 to 500 MPa in a test chamber. It has been shown that the parameters of minor magnetic hysteresis loops can be used to estimate the amount of plastic strain and the strain-related structural damage of metal.

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Fabrication of Numerous Ferromagnetic Metal Nanowires Using Electrodeposition Technique

Materials Science Forum ◽

10.4028/www.scientific.net/msf.654-656.1724 ◽

2010 ◽

Vol 654-656 ◽

pp. 1724-1727

Author(s):

Takeshi Ohgai ◽

Takafumi Fujimaru ◽

Keizo Takao ◽

Akio Kagawa

Keyword(s):

Coercive Force ◽

Pore Diameter ◽

Magnetic Hysteresis ◽

Hysteresis Loops ◽

Metal Nanowires ◽

Electrodeposition Technique ◽

Nanoporous Template ◽

Magnetic Hysteresis Loops ◽

Fe Alloys ◽

Co Nanowires

To synthesize an array of numerous ferromagnetic nanowires, iron-group metals such as Ni, Co, Fe, Ni-Fe and Co-Fe alloys were electrodeposited from aqueous solution into a nanoporous template with numerical cylindrical nanochannels . The shape of nanowires was precisely transferred from the nanochannel template and the aspect ratio reached to around 150. Magnetic hysteresis loops revealed that Ni, Co and Fe nanowires were spontaneously magnetized to the long axis direction. Coercive force of the nanowires with 6000 nm in length was increased in decreasing the pore-diameter. The coercive force of Co nanowires with 40 nm in diameter has increased up to 1084 Oe.

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