Magnetic-field-induced switchable exchange bias in NiFe film on (110) Fe3O4 with a strong uniaxial magnetic anisotropy

2015 ◽  
Vol 106 (20) ◽  
pp. 202405 ◽  
Author(s):  
Joonghoe Dho
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Exchange Bias ◽  
Uniaxial Magnetic Anisotropy

Reflection of spin waves from a ferromagnetic multilayer with interfacial coupling of finite strength (reflection of spin waves from multilayer)

Open Physics ◽  
2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Yuri Gorobets ◽  
Sergey Reshetnyak
Keyword(s):  
Magnetic Field ◽  
Reflection Coefficient ◽  
Magnetic Anisotropy ◽  
Saturation Magnetization ◽  
Exchange Interaction ◽  
Spin Waves ◽  
Interfacial Coupling ◽  
Bias Magnetic Field ◽  
Uniaxial Magnetic Anisotropy ◽  
Magnonic Crystal

AbstractThe reflection coefficient of bulk spin waves from a ferromagnetic multilayer with periodically modulated parameters of the exchange interaction, the uniaxial magnetic anisotropy and the saturation magnetization (a magnonic crystal) is calculated. The dependence of the reflection coefficient upon the spin wave frequency and the values of the bias magnetic field, the parameter of interfacial coupling, and the internal structure of the unit cell are investigated.

scholarly journals Tailoring Perpendicular Exchange Bias Coupling in Au/Co/NiO Systems by Ion Bombardment

Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 813 ◽  
Author(s):  
Piotr Kuświk ◽  
Alexander Gaul ◽  
Maciej Urbaniak ◽  
Marek Schmidt ◽  
Jacek Aleksiejew ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Exchange Bias ◽  
Perpendicular Magnetic Anisotropy ◽  
Ion Bombardment ◽  
Film Deposition ◽  
Layered System ◽  
Plane Anisotropy ◽  
Ferromagnetic Layers ◽  
Level Model

Here, we systematically investigated the influence of ion bombardment with different fluences on the strength and direction of the exchange bias coupling in Au/Co/NiO systems with perpendicular magnetic anisotropy of the Co layer. We found that the direction of the exchange bias coupling can be reversed as a result of ion bombardment performed in an external magnetic field which is in the opposite direction to the magnetic field applied during film deposition. Moreover, the strength of the exchange bias coupling can be tailored by varying the ion fluence. These results show behaviors similar to the results found for systems of ferromagnetic layers with in-plane anisotropy. Our experimental work, supported by a two-energy-level model, demonstrates that exchange bias coupling can be tuned in a layered system with perpendicular magnetic anisotropy using ion bombardment.

The loss of mechanical stability and the critical magnetization of a ferromagnetic particle in an elastomer

Soft Matter ◽  
2019 ◽  
Vol 15 (29) ◽  
pp. 5987-5994 ◽  
Author(s):  
V. M. Kalita ◽  
Yu. I. Dzhezherya ◽  
G. G. Levchenko
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Mechanical Stability ◽  
Ferromagnetic Particle ◽  
Uniaxial Magnetic Anisotropy ◽  
Soft Ferromagnetic

The loss of mechanical stability of a spherical magnetically soft ferromagnetic particle with uniaxial magnetic anisotropy and located in an elastomer under the action of a magnetic field has been studied theoretically.

Uniaxial magnetic anisotropy of amorphous Fe–B films deposited electrochemically in a magnetic field

1999 ◽  
Vol 85 (8) ◽  
pp. 4503-4505 ◽  
Author(s):  
Naoyuki Fujita ◽  
Mitsuteru Inoue ◽  
Ken’Ichi Arai ◽  
Masanobu Izaki ◽  
Toshitaka Fujii
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Uniaxial Magnetic Anisotropy

Shape-Anisotropic Nickel-PDMS Composites with Uniaxial Magnetic Anisotropy Obtained by Emulsification Under Magnetic Field

2017 ◽  
Vol 30 (8) ◽  
pp. 2159-2164 ◽  
Author(s):  
J. G. Cabal-Velarde ◽  
A. L. Guerrero ◽  
E. Romero-Tela ◽  
J. H. García-Gallegos ◽  
J. L. Sánchez Llamazares ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Anisotropy ◽  
Uniaxial Magnetic Anisotropy

Giant exchange bias induced via tuning interfacial spins in polycrystalline Fe3O4/CoO bilayers

2021 ◽  
Author(s):  
Fanghua Tian ◽  
Yebei Li ◽  
Qizhong Zhao ◽  
Kaiyan Cao ◽  
Dingchen Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Exchange Bias

A giant exchange bias of 9600 Oe was achieved under a magnetic field HFC = 20 kOe in Fe3O4/CoO films.

Deciphering the influence of structural distortions on the uniaxial magnetic anisotropy of pentagonal bipyramidal Ni(ii) complexes

2019 ◽  
Vol 55 (77) ◽  
pp. 11547-11550
Author(s):  
Mamon Dey ◽  
Prashurya Pritam Mudoi ◽  
Anup Choudhury ◽  
Bipul Sarma ◽  
Nayanmoni Gogoi
Keyword(s):  
Magnetic Anisotropy ◽  
Structural Distortion ◽  
Uniaxial Magnetic Anisotropy ◽  
Simple Strategy ◽  
Structural Distortions

Role of structural distortion on the uniaxial magnetic anisotropy of pentagonal bipyramidal Ni(ii) complexes is explored. A simple strategy to enhance the uniaxial magnetic anisotropy in pentagonal bipyramidal Ni(ii) complexes is proposed.

INFLUENCE OF AN EXTERNAL MAGNETIC FIELD ON THE DYNAMICS OF A NEW-PHASE NUCLEUS IN THE VICINITY OF THE FIRST-ORDER PHASE TRANSITION IN MAGNETS WITH DEFECTS PRESENT

2012 ◽  
Vol 26 (28) ◽  
pp. 1250183 ◽  
Author(s):  
VLADIMIR NAZAROV ◽  
RISHAT SHAFEEV
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
External Magnetic Field ◽  
Magnetic Anisotropy ◽  
Spin Reorientation ◽  
Critical Fields ◽  
First Order ◽  
Phase Nucleus ◽  
First Order Phase Transition ◽  
New Phase

Theoretically, with the aid of a soliton model, the evolution of a new-phase nucleus near the first-order spin-reorientation phase transition in magnets has been investigated in an external magnetic field. The influence of an external field and one-dimensional defects of magnetic anisotropy on the dynamics of such nucleus has been demonstrated. The conditions for the localization of the new-phase nucleus in the region of the magnetic anisotropy defect and for its escape from the defect have been determined. The values of the critical fields which bring about the sample magnetization reversal have been identified and estimated.

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