Structural and magnetic properties of Co-C composite films and Co/C multilayer films

2001 ◽  
Vol 73 (2) ◽  
pp. 215-218 ◽  
Author(s):  
J. Shi ◽  
M. Azumi ◽  
O. Nittono
2012 ◽  
Vol 13 (1) ◽  
pp. 13
Author(s):  
Erwin Erwin

Co/Sm multilayer films with structure of 20 [Co (x nm)/Sm (1.2 nm)] where x = 1.1, 2.2 and 4.2 nm and 20[Co (4.2nm)/Sm (x nm)] where x=1.2 nm to 7.5 nm were fabricated using dc magnetron sputtering. Each multilayer filmconsisted of 20 bilayers of Co layers with various thicknesses sandwiched with Sm layers. The application of lowangle X-ray diffraction measurements to the characterization of these multilayers is described. The periodiclayered structure with sharp interfaces was observed for all multilayer films. The measured magnetization valuesare lower than the values calculated in terms of the nominal concentration of cobalt in the multilayers. This impliessignificant “mixing” at small film thickness. The formation of a high magneto crystalline anisotropy of CoSm alloyat the interfaces, as a result of interdiffusion between Co and Sm layers was considered to be responsible for theincrease of the coercivity for Co/Sm multilayer.


2012 ◽  
Vol 190 ◽  
pp. 466-469 ◽  
Author(s):  
Elena A. Denisova ◽  
Rauf S. Iskhakov ◽  
Lidia Chekanova ◽  
Yuri Kalinin ◽  
Alexander Sitnikov

Magnetic properties of (Co40Fe40B20)X(SiO2)100-X nanogranular composite films, [(Co40Fe40B20)X(SiO2)100-X /a-Si:n multilayer films and layered (Co40Fe40B20)X(SiO2)100-X films with X ranging from 30 to 80 have been characterized by means of magnetic measurements and ferromagnetic resonance. Layer thickness was varied between 1.3 and 6 nm. Thermal decrease of (Co40Fe40B20)X(SiO2)100-X composite magnetization follows the T3/2 law. The spectrum of standing spin-wave has been detected in the perpendicular experiment configuration for films with the metal phase content above 48 vol. %. It is found that the Hr(n2) dependencies are non-linear. Such behavior is probably caused by the fluctuations of magnetic parameters (the magnetization and the ferromagnetic exchange coupling) in nanocomposite films. A comparison between the magnetic properties of (Co40Fe40B20)X(SiO2)100-X granular films and [(Co40Fe40B20)X(SiO2)100-X /a-Si:n multilayer films was carried out.


2012 ◽  
Vol 522 ◽  
pp. 372-375
Author(s):  
H.H. Guo ◽  
J.L. Liao ◽  
B. Ma ◽  
Z.Z. Zhang ◽  
Q.Y. Jin ◽  
...  

1979 ◽  
Vol 40 (C5) ◽  
pp. C5-206-C5-208 ◽  
Author(s):  
W. J. James ◽  
K. Hardman ◽  
W. Yelon ◽  
B. Kebe

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-153-C8-154
Author(s):  
J. G. Booth ◽  
R. M. Mankikar ◽  
A. S. Saleh

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