Effect of pH value on the structural and magnetic properties of nanocrystalline strontium hexaferrite thin films

2011 ◽  
Vol 323 (21) ◽  
pp. 2643-2647 ◽  
Author(s):  
S.M. Masoudpanah ◽  
S.A. Seyyed Ebrahimi
2012 ◽  
Vol 19 (01) ◽  
pp. 1250004
Author(s):  
A. SHANAGHI

Strontium hexaferrite was widely used in the fabrication of commercial permanent magnets and certain microwave devices. In this study, the strontium hexaferrite nanoparticle coatings were prepared by sol–gel method and using spin coating process on silicon substrate, then the effect of pH value, such as 5, 7 and 9, and calcination temperatures, such as 600°C, 800°C, and 1000°C, on structural and magnetic properties of strontium hexaferrite thin films were investigated by XRD, SEM and VSM measurements. The maximum saturation magnetization value of 57.43 emu/g and coercivity value of 3908 Oe were achieved for the thin film with crystallite size approximately 41 nm, prepared at pH value of 7 and calcinations temperature of 800°C.


2021 ◽  
Vol 118 (15) ◽  
pp. 152402
Author(s):  
Sudhir Regmi ◽  
Zhong Li ◽  
Abhishek Srivastava ◽  
Rabin Mahat ◽  
Shambhu KC ◽  
...  

2014 ◽  
Vol 50 (8) ◽  
pp. 1-4 ◽  
Author(s):  
Robina Ashraf ◽  
Saira Riaz ◽  
Mahwish Bashir ◽  
Usman Khan ◽  
Shahzad Naseem

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Gui-fang Li ◽  
Shibin Liu ◽  
Shanglin Yang ◽  
Yongqian Du

We prepared magnetic thin films Ni81Fe19on single-crystal Si(001) substrates via single graphene layer through magnetron sputtering for Ni81Fe19and chemical vapor deposition for graphene. Structural investigation showed that crystal quality of Ni81Fe19thin films was significantly improved with insertion of graphene layer compared with that directly grown on Si(001) substrate. Furthermore, saturation magnetization of Ni81Fe19/graphene/Si(001) heterostructure increased to 477 emu/cm3with annealing temperatureTa=400°C, which is much higher than values of Ni81Fe19/Si(001) heterostructures withTaranging from 200°C to 400°C.


2002 ◽  
Vol 189 (3) ◽  
pp. 883-887
Author(s):  
Sam Jin Kim ◽  
Woo Chul Kim ◽  
In Bo Shim ◽  
Chul Sung Kim ◽  
Seung Wha Lee

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