Magnetic and structural behavior of FeCo/Cu multilayers submitted to Kr irradiation

被引：6
作者：
Graff, I. L.
Traverse, A.
Geshev, J.
Teixeira, S. R.
Amaral, L.
机构：
[1] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil
[2] Univ Paris 11, LURE, F-91898 Orsay, France
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 257卷
关键词：
ion irradiation; magnetic thin films; structural effects;
D O I：
10.1016/j.nimb.2007.01.092
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We have studied the effects of ion irradiation on the structural and magnetic properties of FeCo/Cu multilayers. The films were irradiated at room temperature with 600 keV Kr ions, with fluences ranging from 1 to 5 x 10(15) ions/cm(2). X-ray absorption spectroscopy (XAS) was used to characterize the structural changes around Fe and Co atoms. The XAS data have shown a phase transformation of FeCo alloy from bcc for the as-deposited sample to fcc after irradiation. The structural effects induced by irradiation changed the saturation magnetization (M-s), the coercive field (H-c) and the magnetic particle size. The interplay between structural and magnetic effects indicates that some degree of mixing took place even being the elements immiscible. (c) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：424 / 427
页数：4
相关论文
共 14 条
[1]   MAGNETIC-PROPERTIES AND HYPERFINE INTERACTIONS IN SPUTTERED (CO70FE30)(36)AG-64 HETEROGENEOUS ALLOY [J].
AURIC, P ;
TEIXEIRA, SR ;
DIENY, B ;
CHAMBEROD, A ;
REDON, O .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 146 (1-2) :153-164
[2]   A MONTE-CARLO COMPUTER-PROGRAM FOR THE TRANSPORT OF ENERGETIC IONS IN AMORPHOUS TARGETS [J].
BIERSACK, JP ;
HAGGMARK, LG .
NUCLEAR INSTRUMENTS & METHODS, 1980, 174 (1-2) :257-269
[3]   Structural evolution of Co/Cu nanostructures under 1 MeV ion-beam irradiation [J].
Cai, M ;
Veres, T ;
Roorda, S ;
Schiettekatte, F ;
Cochrane, RW .
JOURNAL OF APPLIED PHYSICS, 2004, 95 (04) :1996-2005
[4]   Ion-beam irradiation of Co/Cu nanostructures: Effects on giant magnetoresistance and magnetic properties [J].
Cai, M ;
Veres, T ;
Schiettekatte, F ;
Roorda, S ;
Cochrane, RW .
JOURNAL OF APPLIED PHYSICS, 2004, 95 (04) :2006-2014
[5]   Planar patterned magnetic media obtained by ion irradiation [J].
Chappert, C ;
Bernas, H ;
Ferré, J ;
Kottler, V ;
Jamet, JP ;
Chen, Y ;
Cambril, E ;
Devolder, T ;
Rousseaux, F ;
Mathet, V ;
Launois, H .
SCIENCE, 1998, 280 (5371) :1919-1922
[6]  
Chikazumi S., 1964, PHYS MAGNETISM
[7]   Time evolution of the structural short-range order during the mechanical milling of Fe-Co-Cu nanocrystalline alloys [J].
Gay-Sanz, N ;
Prieto, C ;
Muñoz-Martín, A ;
de Andrés, A ;
Vázquez, M ;
Yu, SC .
JOURNAL OF MATERIALS RESEARCH, 1999, 14 (10) :3882-3888
[8]   Ion beam effects on the morphology and crystalline structure of Fe70Co30/Cu multilayers [J].
Graff, I. L. ;
Traverse, A. ;
Teixeira, S. R. ;
Amaral, L. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2006, 249 :129-131
[9]   Structural modifications in FexCo1-x/Cu multilayers induced by ion irradiation [J].
Graff, IL ;
Teixeira, SR ;
Amaral, L ;
Alves, MCM ;
Flores, WH .
JOURNAL OF APPLIED PHYSICS, 2004, 96 (03) :1469-1474
[10]   Highly efficient room-temperature tunnel spin injector using CoFe/MgO(001) [J].
Jiang, X ;
Wang, R ;
Shelby, RM ;
Parkin, SSP .
IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 2006, 50 (01) :111-120
12