Title :
Structural and magnetic properties of amorphous and nanocrystalline CoFeSiB thin films
Author :
Yoon, Jungbum ; Park, Seung-Young ; Jung, Myung-Hwa ; You, Chun-Yeol ; Chun, Byong Sun ; Kim, You Song ; Kim, Young Keun ; Kim, Soon Seop ; Hwang, Jae Youn ; Rhee, Jang Roh ; Kim, Taewan
Author_Institution :
Quantum Mater. Res. Team, Korea Basic Sci. Inst., Daejeon
Abstract :
We have studied the structural, magnetic, and transport properties of CoFeSiB films with various Co compositions. Here, we focus on two amorphous Co74Fe4Si14B8 and nanocrystalline Co78Fe2Si12B8 thin films. Our results show that the amorphous film is a typical soft magnetic material, while the nanocrystalline film has a large saturation field. We conjecture that in the nanocrystalline film, the super-paramagnetism of nanocrystalline phase or antiferromagnetic exchange at the boundary between the amorphous and nanocrystalline phases causes the large saturation field.
Keywords :
amorphous magnetic materials; antiferromagnetic materials; boron alloys; cobalt alloys; exchange interactions (electron); iron alloys; magnetic thin films; nanostructured materials; silicon alloys; soft magnetic materials; superparamagnetism; CoFeSiB; CoFeSiB - System; amorphous CoFeSiB thin film; antiferromagnetic exchange; magnetic properties; nanocrystalline CoFeSiB thin film; soft magnetic material; structural properties; superparamagnetism; transport properties; Amorphous magnetic materials; Amorphous materials; Antiferromagnetic materials; Iron; Magnetic films; Magnetic properties; Nanostructured materials; Saturation magnetization; Semiconductor thin films; Soft magnetic materials; CoFeSiB thin film; amorphous; magnetic property; nanocrystalline; structure; transport property;
Conference_Titel :
Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE
Conference_Location :
Gyeongju
Print_ISBN :
978-1-4244-0540-4
Electronic_ISBN :
978-1-4244-0541-1
DOI :
10.1109/NMDC.2006.4388780
