Magnetic and Structural Studies of FeSi Multilayers Irradiated by Argon Ions  

Oleh:

Purwanto, Setyo ; Honda, S. ; Sakamoto, I ; Koike, M. ; Tanuoe, H.

Jenis: Article from Journal - ilmiah nasional - tidak terakreditasi DIKTI
Dalam koleksi: Jurnal Sains Materi Indonesia vol. 7 no. 1 (2005), page 42.
Topik: irradiated by argon ions; magnetic; FeSi multilayers

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ112.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Magnetic and structural studies of FeSi multilayers irradiated by argon ions. We prepared Fe/Si multilayers (MLs) by helicon plasma sputerring to investigate the antiferromagnetic couplings (AFC) between Fe layers sandwiched by Si spacers. [Fe (2nm)/ Si (1.5 nm)]30 MLs showed the ferromagnetic couplings (FC). the ion irradiation by 400 keV Ar ions was performed to [Fe (2nm)/ Si (1.5 nm)]30 MLS using AIST 400 keV ion implanter. The magnetic and dtructural properties were investigated by Vibrating Sample Magnetometer (VSM) and Conversion Electron Mussbauer Spectroscopy (CEMS). the value of saturation magnetization in as deposited [Fe (2nm)/ Si (1.5 nm)]30 MLS is smaller than that of bulk L-Fe (1700 emu at RT). This decrease of saturation magnetization implies an atomic mixing in the interface region. The vales of saturation magnetization decrease with increasingAr ion dose. The CEMS spectrum of [Fe (2nm)/ Si (1.5 nm)]30 MLS shows the doublet peaks overlapped with broad sextet peaks. The doublet peaks correspond to nonmagnetic Fe1-8Si, phase in CEMS spectra seem not to change with increasing Ar ion dose but the values of Hhf decrease with increasing Ar ion dose. These results indicate the peculiar atomic mixing by Ar ion irradiation in the interface region.

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