Effect of swift heavy ion irradiation in FePt system

被引：7
作者：
Kavita, S
Reddy, VR
Gupta, A
Avasthi, DK
机构：
[1] UGC DAE Consortium Sci Res, Indore 452017, Madhya Pradesh, India
[2] Ctr Nucl Sci, New Delhi 110067, India
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2006年 / 244卷 / 01期
关键词：
perpendicular magnetic anisotropy; ion irradiation; magnetic multilayers; magneto-optical Kerr effect;
D O I：
10.1016/j.nimb.2005.11.069
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The present study reports the effects of swift heavy ion irradiation in FePt system in different forms viz., uniform alloy film, multilayer, and nano-particles in non-magnetic medium. The FePt alloy film, Fe/Pt multilayer and FePt nano-particles in silver matrix with partial L1(0) ordering, are prepared by ion beam sputtering method and subsequent vacuum annealing at 450 degrees C for 1 h. These samples are irradiated with swift heavy ions in order to study structural changes induced due to electronic energy loss by the bombarding ions. X-ray diffraction and magneto-optical Kerr effect are used for the characterisation of the unirradiated and irradiated films. It is observed that irradiation results in partial destruction of L1(0) ordering. Irradiation effects are more pronounced in the case of nano-particles and multilayers as compared to that of continuous alloy film. The results are discussed using thermal spike model. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：19 / 22
页数：4
相关论文
共 16 条
  • [1] Swift heavy ion irradiation and annealing effects in Fe/Si multilayers
    Dhuri, P
    Gupta, A
    Chaudhari, SM
    Phase, DM
    Avasthi, DK
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1999, 156 (1-4) : 148 - 152
  • [2] ION-BEAM MIXING EFFECTS INDUCED IN THE LATENT TRACKS OF SWIFT HEAVY-IONS IN A FE/SI MULTILAYER
    DUFOUR, C
    BAUER, P
    MARCHAL, G
    GRILHE, J
    JAOUEN, C
    PACAUD, J
    JOUSSET, JC
    [J]. EUROPHYSICS LETTERS, 1993, 21 (06): : 671 - 677
  • [3] FLEISCHER RL, 1965, J APPL PHYS, V36, P2645
  • [4] Graf L, 1935, PHYS Z, V36, P544
  • [5] Large electronically mediated sputtering in gold films
    Gupta, A
    Avasthi, DK
    [J]. PHYSICAL REVIEW B, 2001, 64 (15):
  • [6] Swift heavy ion-induced modification of metallic thin films and multilayers
    Gupta, A
    [J]. VACUUM, 2000, 58 (01) : 16 - 32
  • [7] ANOMALOUS REDUCTION OF STAGE-I RECOVERY IN NICKEL IRRADIATED WITH HEAVY-IONS IN THE ENERGY-RANGE 100-120 MEV
    IWASE, A
    SASAKI, S
    IWATA, T
    NIHIRA, T
    [J]. PHYSICAL REVIEW LETTERS, 1987, 58 (23) : 2450 - 2453
  • [8] Structural and magnetic properties of FePt-Ag composite film with perpendicular magnetic anisotropy
    Kang, KH
    Yang, T
    Suzuki, T
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) : 2039 - 2041
  • [9] KAVITA S, 2005, IND GERM WORKSH NEW
  • [10] KAVITA S, IN PRESS HYPERFINE I
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