Temperature dependence of the exchange parameter and domain-wall properties

2003 ◽  
Vol 93 (7) ◽  
pp. 4040-4044 ◽  
Author(s):  
G. Vértesy ◽  
I. Tomáš
Keyword(s):  
Domain Wall ◽  
Temperature Dependence ◽  
Exchange Parameter ◽  
Wall Properties

scholarly journals Orientation and temperature dependence of domain wall properties in FePt

2007 ◽  
Vol 90 (8) ◽  
pp. 082507 ◽  
Author(s):  
D. Hinzke ◽  
U. Nowak ◽  
R. W. Chantrell ◽  
O. N. Mryasov
Keyword(s):  
Domain Wall ◽  
Temperature Dependence ◽  
Wall Properties

The origins of the colours of natural yellow, blue, and green sapphires

1972 ◽  
Vol 25 (7) ◽  
pp. 1371 ◽  
Author(s):  
J Ferguson ◽  
PE Fielding
Keyword(s):  
Temperature Dependence ◽  
Absorption Spectra ◽  
Excited States ◽  
Exchange Parameter ◽  
Nearest Neighbour ◽  
Electronic Excitations ◽  
Heisenberg Exchange ◽  
Synthetic Crystals

An analysis of the absorption spectra of natural yellow sapphires shows that the absorption is due to single Fe3+ ions and pairs of ions Fe3+-O2--Fe3+. Assignments of all levels from the 4G, 4P, and 4D have been made as well as four simultaneous electronic excitations of a pair of ions. The temperature dependence of the intensity of the pair absorption shows that one pair is mainly involved, probably the fourth- nearest neighbour pair. The value of the Heisenberg exchange parameter (J Sa. Sb) lies in the range 30-40 K. Estimates of this parameter for various excited states have been made. Synthetic yellow sapphires have spectra which duplicate the natural specimens. Blue and green natural sapphires have, in addition to the bands present in the spectra of yellow sapphires, spectra with bands at 17800 (┴C), 14200 (//c), 11500 (┴C), and 10000 om-1 (//c). The first two can be linked to Fe,Ti pairs and the evidence favours the nearest neighbour pair Ti4+-O2?Fe2+ for the 17800 cm-1 band and possibly the first neighbour pair for the 14200 cm-1 band. The second two can be produced in synthetic crystals by growth from fluoride-containing flux and the evidence supports an explanation involving second-nearest neighbour pairs Fe2+- O2--Fe3+ for the 11500 cm-1 absorption and first neighbours for the 10000 om-1 absorption.

scholarly journals Temperature dependence of domain‐wall coercive field in magnetic garnet films

1992 ◽  
Vol 71 (7) ◽  
pp. 3462-3466 ◽  
Author(s):  
G. Vértesy ◽  
I. Tomáš ◽  
L. Půst ◽  
J. Pačes
Keyword(s):  
Domain Wall ◽  
Temperature Dependence ◽  
Coercive Field ◽  
Garnet Films ◽  
Magnetic Garnet

scholarly journals Electronic bulk and domain wall properties in B -site doped hexagonal ErMnO3

2018 ◽  
Vol 97 (8) ◽  
Author(s):  
T. S. Holstad ◽  
D. M. Evans ◽  
A. Ruff ◽  
D. R. Småbråten ◽  
J. Schaab ◽  
...  
Keyword(s):  
Domain Wall ◽  
Wall Properties

Coercive field and domain wall properties in (DyχY1-χ) Fe2 and (ErχY1-χFe2 intermetallic compounds

1994 ◽  
Vol 210 (1-2) ◽  
pp. 325-330 ◽  
Author(s):  
K.M.B. Alves ◽  
L.C. Sampaio ◽  
A.P. Guimarães ◽  
S.F. da Cunha
Keyword(s):  
Domain Wall ◽  
Intermetallic Compounds ◽  
Coercive Field ◽  
Wall Properties

Temperature Dependence of 180° Domain Wall Velocity in BaTiO3

1964 ◽  
Vol 35 (10) ◽  
pp. 2895-2899 ◽  
Author(s):  
H. L. Stadler ◽  
P. J. Zachmanidis
Keyword(s):  
Domain Wall ◽  
Temperature Dependence ◽  
Wall Velocity ◽  
Domain Wall Velocity

Temperature dependence of current-induced magnetic domain wall motion in an asymmetric Co/Ni nanowire

2015 ◽  
Vol 54 (3) ◽  
pp. 038004 ◽  
Author(s):  
Kohei Ueda ◽  
Ryo Hiramatsu ◽  
Kab-Jin Kim ◽  
Takuya Taniguchi ◽  
Takayuki Tono ◽  
...  
Keyword(s):  
Domain Wall ◽  
Temperature Dependence ◽  
Wall Motion ◽  
Magnetic Domain ◽  
Domain Wall Motion ◽  
Magnetic Domain Wall
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