Exchange coupling strength in synthetic ferrimagnetic media

2001 ◽  
Vol 37 (4) ◽  
pp. 1449-1451 ◽  
Author(s):  
A. Inomata ◽  
E.N. Abarra ◽  
B.R. Acharya ◽  
H. Akimoto ◽  
I. Okamoto
Keyword(s):  
Coupling Strength ◽  
Exchange Coupling

AB-INITIO BAND STRUCTURE CALCULATION FOR MAGNETIC MULTILAYERS

1993 ◽  
Vol 07 (01n03) ◽  
pp. 456-459 ◽  
Author(s):  
J. STICHT ◽  
F. HERMAN ◽  
J. KÜBLER
Keyword(s):  
Magnetic Properties ◽  
Band Structure ◽  
Total Energy ◽  
Ab Initio ◽  
Coupling Strength ◽  
First Principles ◽  
Exchange Coupling ◽  
Magnetic Multilayers ◽  
Structure Calculation ◽  
Band Structure Calculation

The magnetic properties of magnetic multilayers are studied using first principles total energy calculations. In this paper we present our results for bcc Fe multilayers with a (001) stacking direction. Using Nb as a spacer material we find an oscillating exchange coupling with a period of about 4.6 Å( ≈3 Nb monolayers). A detailed study of the magetic moments in the Nb spacer is given. Furthermore we discuss the dependence of the exchange coupling strength as a function of the thickness of the Fe slabs.

Studies of Exchange Coupling in Fe (001) Whisker/Cr/Fe Structures using BLS and Rheed Techniques.

1993 ◽  
Vol 313 ◽  
Author(s):  
B. Heinrich ◽  
M. From ◽  
J.F. Cochran ◽  
L. X. Liao ◽  
Z. Celiński ◽  
...  
Keyword(s):  
Coupling Strength ◽  
Exchange Coupling ◽  
High Energy ◽  
Variable Number ◽  
Antiferromagnetic Coupling ◽  
Iron Film ◽  
First Principles Calculations ◽  
Iron Whisker ◽  
Short Period ◽  
Coupling Strengths

ABSTRACTThe conditions for an almost perfect growth of smooth Cr (001) films on an iron whisker substrate have been investigated by means of reflection high energy electron diffraction (RHEED). The exchange interaction between 20 Monolayer thick Fe (001) films separated from a bulk whisker Fe (001) substrate by a variable number of Cr (001) Monolayers (ML) has been investigated by means of Brillouin light scattering experiments (BLS). These experiments show unambiguously that the exchange coupling strength between the iron film and the iron whisker can be described by a short wavelength oscillatory term superposed on a slowly varying antiferromagnetic background. The BLS data enabled one to separate the bilinear and the biquadratic contributions to the antiferromagnetic exchange coupling terms. Both the bilinear and the biquadratic coupling strengths exhibited a short period oscillatory dependence on the Cr interlayer thickness (∼2 Monolayers). Maxima in the bilinear antiferromagnetic coupling strength occur for an odd number of Cr Monolayers. This observation is not in agreement with first principles calculations. The first phase inversion has been found to occur between 4 and 5 ML of Cr.

scholarly journals Modulation of interlayer exchange coupling strength in magnetic tunnel junctions via strain effect

AIP Advances ◽  
2015 ◽  
Vol 5 (9) ◽  
pp. 097221 ◽  
Author(s):  
Xin Jiang ◽  
Zhipeng Li ◽  
Yuankai Zheng ◽  
Christian Kaiser ◽  
Zhitao Diao ◽  
...  
Keyword(s):  
Coupling Strength ◽  
Exchange Coupling ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Strain Effect ◽  
Interlayer Exchange Coupling ◽  
Interlayer Exchange

Bls Studies of Exchange Coupling in The Iron Whisker/Cr/Fe System

1995 ◽  
Vol 384 ◽  
Author(s):  
J.F. Cochran ◽  
K. Totland ◽  
B. Heinrich ◽  
D. Venus ◽  
S. Govorkov
Keyword(s):  
Thin Film ◽  
Coupling Strength ◽  
Kerr Effect ◽  
Exchange Coupling ◽  
Molecular Beam ◽  
Growth Conditions ◽  
Antiferromagnetic Coupling ◽  
Ferromagnetic Coupling ◽  
Film Magnetization

ABSTRACTBrillouin light scattering (BLS) and magneto-optic Kerr effect have been carried out on a series of specimens consisting of a Fe(001) whisker substrate upon which thin Cr(001) and Fe(001) layers have been deposited by means of molecular beam epitaxy in ultrahigh vacuum. The Fe film was 20 monolayers (ML) thick, and the Cr(001) films were grown having various thicknesses. It is demonstrated that BLS thin film frequencies measured in the saturated magnetic state with the thin film magnetization parallel with the applied magnetic field can be used to obtain the exchange coupling strength between the thin film and whisker magnetizations both for antiferromagnetic coupling and for ferromagnetic coupling, provided that the ferromagnetic coupling is not too strong. It is also shown that the coupling strength is extremely sensitive to the quality of the chromium growth: a small deterioration in the growth conditions has been found to reduce the exchange coupling by nearly a factor of two.

scholarly journals Controlling Exchange Coupling Strength in Ni x Cu1−x Thin Films

2013 ◽  
Vol 26 (5) ◽  
pp. 1957-1961 ◽  
Author(s):  
B. Nagy ◽  
Y. N. Khaydukov ◽  
L. F. Kiss ◽  
S. Sajti ◽  
D. G. Merkel ◽  
...  
Keyword(s):  
Thin Films ◽  
Coupling Strength ◽  
Exchange Coupling

Characterizing formation of interfacial domain wall and exchange coupling strength in laminated exchange coupled composites

2013 ◽  
Vol 102 (16) ◽  
pp. 162408 ◽  
Author(s):  
H.-C. Hou ◽  
B. J. Kirby ◽  
K. Z. Gao ◽  
C.-H. Lai
Keyword(s):  
Domain Wall ◽  
Coupling Strength ◽  
Exchange Coupling
Sign in / Sign up

Export Citation Format

Share Document