Single-crystal iron garnet films with increased thermal stability of magnetization and ferromagnetic resonance field

2001 ◽  
Vol 27 (2) ◽  
pp. 110-111
Author(s):  
S. I. Yushchuk ◽  
P. S. Kostyuk
1998 ◽  
Vol 43 (9) ◽  
pp. 1051-1054 ◽  
Author(s):  
S. I. Yushchuk ◽  
P. S. Kostyuk ◽  
I. E. Lopatinskii

1999 ◽  
Vol 603 ◽  
Author(s):  
V. Denysenkov ◽  
A. Jalali-Roudsar ◽  
N. Adachi ◽  
S. Khartsev ◽  
A. Grishin ◽  
...  

AbstractAmong other magneto-optic materials bismuth substituted yttrium iron garnet (BixY1−x)3 Fe5O12 has the highest Faraday rotation effect in visible region. Completely substituted bismuth iron garnet Bi3Fe5O12 (BIG) films have been grown by pulsed laser deposition technique onto (111) (NdGd)3(ScGa)5O12 single crystal with lattice constant of 12.623 Å. X-ray diffraction proves epitaxial film quality. VSM measurements yield the saturation magnetization 4πMs, = 1100 G and coercive field is about 50 Oe. Ferromagnetic resonance (FMR) method reveals perpendicular magnetic anisotropy in fabricated films. Angular measurements of FMR give the constants of uniaxial and cubic anisotropy in BIG film: Ku = 5.9×104 erg/cm3 and K1= - 6.95×103 erg/cm3. The Faraday rotation has been found to reach - 7.8 deg/µm at 630 nm.


1997 ◽  
Vol 42 (9) ◽  
pp. 1085-1087
Author(s):  
V. T. Dovgii ◽  
T. G. Astaf’eva ◽  
F. G. Bar’yakhtar ◽  
G. I. Yampol’skaya

1993 ◽  
Vol 73 (11) ◽  
pp. 7969-7971 ◽  
Author(s):  
Qixin Guo ◽  
Osamu Kato ◽  
Akira Yoshida

2020 ◽  
Vol 46 (7) ◽  
pp. 9192-9197 ◽  
Author(s):  
Liaoyuan Zhang ◽  
Wenping Geng ◽  
Xi Chen ◽  
Yimeng Li ◽  
Xiaojun Qiao ◽  
...  

1990 ◽  
Vol 182 ◽  
Author(s):  
J. R. Phillips ◽  
P. Revesz ◽  
J. O. Olowolafe ◽  
J. W. Mayer

AbstractThe thermal stability of Co silicide on single crystal and polycrystalline Si has been investigated. Co films were evaporated onto (100) Si and undoped polycrystalline Si and annealed in vacuum. Resulting silicide films were examined using Rutherford backscattering spectroscopy, scanning electron microscopy, electron—induced x—ray spectroscopy, and sheet resistivity measurements. We find that CoSi2 on single crystal (100) Si remains stable through 1000ºC. In contact with undoped polycrystalline Si, intermixing begins at temperatures as low as 650ºC for 30min annealing. The Co silicide and Si layers are intermixed after 750ºC 30min annealing, giving islands of Si surrounded by silicide material, with both components extending from the surface down to the underlying oxide layer. The behavior of CoSi2 contrasts with results reported for TiSi2 which agglomerates on single crystal Si around 900ºC but is stable on polycrystalline silicon as high as 800ºC. Resistivity measurements show that the Co silicide remained interconnected despite massive incursion by Si into the silicide layer.


2002 ◽  
Vol 744 ◽  
Author(s):  
S. O. Kucheyev ◽  
C. Jagadish ◽  
J. S. Williams ◽  
P. N. K. Deenapanray ◽  
Mitsuaki Yano ◽  
...  

ABSTRACTThe formation of highly resistive films of single-crystal ZnO as a result of irradiation with MeV Li, O, and Si ions is demonstrated. Results show that the ion doses necessary for electrical isolation close-to-inversely depend on the number of ion-beam-generated atomic displacements. Results show that an increase in the dose of 2 MeV O ions (up to ∼ 2 orders of magnitude above the threshold isolation dose) and irradiation temperature (up to 350 °C) has a relatively minor effect on the thermal stability of electrical isolation, which is limited to temperatures of ∼ 300 — 400 °C. For the case of multiple-energy implantation with keV Cr, Fe, or Ni ions, the evolution of sheet resistance with annealing temperature is consistent with defect-induced isolation, with a relatively minor effect of Cr, Fe, or Ni impurities on the thermal stability of isolation. Based on these results, the mechanism for electrical isolation in ZnO by ion bombardment is discussed.


Sign in / Sign up

Export Citation Format

Share Document