ANNEALING EFFECT IN HYDROGEN ATMOSPHERE ON MAGNETIC PROPERTIES OF ION-IMPLANTED YIG THIN FILMS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-991-C8-992 ◽  
Author(s):  
K. Uematsu ◽  
J. S. Shin ◽  
M. Sakuma
2004 ◽  
Vol 466 (1-2) ◽  
pp. 37-40 ◽  
Author(s):  
I. Avci ◽  
M. Tepe ◽  
U. Serincan ◽  
B. Oktem ◽  
R. Turan ◽  
...  

2015 ◽  
Vol 22 (05) ◽  
pp. 1550068
Author(s):  
AHMAD AMIRABADIZADEH ◽  
REZA SARHADDI ◽  
ZAHRA VAHEDIPANAH ◽  
REZA MARDANI

Nanostructured CoFe thin films were prepared on the glass substrates by spray pyrolysis deposition (SPD) method. The as-deposited films were separately annealed at 500°C in ambient air and hydrogen atmospheres to investigate the effect of annealing atmosphere on different properties of the deposited films. Structural, morphological, magnetic and electrical properties of annealed thin films were investigated by the X-ray diffractometer (XRD), scanning electron microscope (SEM), vibrating sample magnetometer (VSM) and four-point probe measurements, respectively. XRD patterns show that by changing the annealing atmosphere from ambient air to hydrogen, the crystal structure transformed from cubic spinel phase (Fd-3m) to cubic CsCl -type phase (Pm-3m). SEM images demonstrated that the morphology, grain size and thickness of annealed thin films depend greatly on the atmosphere type. Thickness of the films annealed in ambient air and hydrogen atmosphere were 378 and 356 nm, respectively. The morphology of the films changes from small sized granular for the ambient air-annealed films to coral-like structures for the hydrogen atmosphere annealed films. The magnetic properties of the annealed thin films depend on the annealing atmosphere, the applied field directions and film microstructural properties. Hydrogen annealing induced a perpendicular magnetic anisotropy in CoFe thin films. Room temperature hysteresis measurements show soft magnetic behavior of the hydrogen atmosphere annealed CoFe films in the perpendicular direction suggested its application in perpendicular magnetic recording media.


2003 ◽  
Vol 48 (7) ◽  
pp. 903-908 ◽  
Author(s):  
S. Ohnuma ◽  
N. Kobayashi ◽  
H. Fujimori ◽  
T. Masumoto ◽  
X.Y. Xiong ◽  
...  

2010 ◽  
Vol 667-669 ◽  
pp. 1207-1212 ◽  
Author(s):  
Cai Liang ◽  
Jing Hu ◽  
Barton C. Prorok ◽  
Chinthaka Gooneratne ◽  
Jürgen Kosel

Magnetostrictive sensors based on ferromagnetic materials have been widely used in detecting chemicals and biological species. The MetglasTM 2826MB is one of the bulk strip materials that is employed as the sensor platform. However, the sensitivity is limited by the large size of the sensors itself. In order to improve the sensitivity, we have developed a process to fabricate microscale sensors of 500 x 100 m in size using conventional MEMS technology. As-deposited, the sensors suffered from internal stress, which was released by a annealing the sensors at 215 °C for two hours under vacuum condition. The annealing process improved the magnetic properties of the thin films and increased the resonant frequency of the sensor by 214 kHz.


1989 ◽  
Vol 13 (2) ◽  
pp. 269-272
Author(s):  
K. Uematsu ◽  
S. Tsukahara S. Tsukahara ◽  
T. Iwashima ◽  
H. Tanoue

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