Magnetic properties of various martensitic phases in Ni-Mn-Ga alloy

被引：49
|
作者：
Straka, L [1 ]
Heczko, O [1 ]
Lanska, N [1 ]
机构：
[1] Helsinki Univ Technol, Dept Engn Math & Phys, Biomed Engn Lab, HUT, FIN-02015 Espoo, Finland
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2002年 / 38卷 / 05期
关键词：
magnetic anisotropy; magnetic shape memory effect; martensite; Ni-Mn-Ga alloys;
D O I：
10.1109/TMAG.2002.802469
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Single crystalline Ni48.7Mn29.1Ga22.2 sample was studied in the temperature range 110 K-425 K. Magnetic properties of four different structure phases were measured at different temperatures. The magnetic anisotropies of the different phases were determined from magnetization curves. At room temperature, the structure is five-layered modulated tetragonal martensite with c/a < 1 and uniaxial anisotropy K-u1 = 1.6 x 10(5) J(.)m(-3). Below 251 K, the structure is orthorhombic c < b < a with c being easy magnetization axis. The magnetic anisotropy energy is 2.1 x 10(5) J.m(-3) between c and a. At 218 K, the orthorhombic phase transforms to tetragonal phase with c/a > 1. Single variant of low-temperature martensite was obtained by cooling in magnetic field 1.4 T. At 173 K, the sum of magnetic anisotropy constants is K-1 + K-2 = 1.5 x 10(5) J.m(-3) assuming the easy-piane magnetic anisotropy.
引用
收藏
页码：2835 / 2837
页数：3
相关论文
共 50 条
  • [1] Martensitic Transformation and Microstructure of Ni-Mn-Ga Magnetic Shape Memory Alloy
    Pushpanathan, K.
    Santhi, R.
    Chokkalingam, R.
    Mahendran, M.
    MATERIALS AND MANUFACTURING PROCESSES, 2012, 28 (01) : 72 - 78
  • [2] Crystal structures and magnetic anisotropy properties of Ni-Mn-Ga martensitic phases with giant magnetic-field-induced strain
    Sozinov, A
    Likhachev, AA
    Ullakko, K
    IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) : 2814 - 2816
  • [3] HREM study of different martensitic phases in Ni-Mn-Ga alloys
    Pons, J
    Santamarta, R
    Chernenko, VA
    Cesari, E
    MATERIALS CHEMISTRY AND PHYSICS, 2003, 81 (2-3) : 457 - 459
  • [4] Magnetic properties of stress-induced martensite and martensitic transformation in Ni-Mn-Ga magnetic shape memory alloy
    Heczko, O
    Straka, L
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 378 (1-2): : 394 - 398
  • [5] Magnetic indication of the stress-induced martensitic transformation in ferromagnetic Ni-Mn-Ga alloy
    Heczko, O
    L'vov, VA
    Straka, L
    Hannula, SP
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 302 (02) : 387 - 390
  • [6] Crystal structure of martensitic phases in Ni-Mn-Ga shape memory alloys
    Pons, J
    Chernenko, VA
    Santamarta, R
    Cesari, E
    ACTA MATERIALIA, 2000, 48 (12) : 3027 - 3038
  • [7] Martensitic transformation in Ni-Mn-Ga alloys
    Fritsch, G
    Kokorin, VV
    Chernenko, VA
    Kempf, A
    Zasimchuk, IK
    PHASE TRANSITIONS, 1996, 57 (04) : 233 - 240
  • [8] Magnetic properties of single crystals of Ni-Mn-Ga magnetic shape memory alloys
    Farrell, SP
    Dunlap, RA
    Cheng, LM
    Ham-Su, R
    Gharghouri, MA
    Hyatt, CV
    SMART STRUCTURES AND MATERIALS 2004: ACTIVE MATERIALS: BEHAVIOR AND MECHANICS, 2004, 5387 : 186 - 197
  • [9] Magnetoelastic Coupling in Ni-Mn-Ga Magnetic Shape Memory Alloy
    Heczko, Oleg
    FERROMAGNETIC SHAPE MEMORY ALLOYS II, 2010, 635 : 125 - 130
  • [10] Processing and properties of Ni-Mn-Ga magnetic shape memory alloy based hybrid materials
    Hannula, S. -P.
    Aaltio, I.
    Ge, Y.
    Lahelin, M.
    Soderberg, O.
    CURRENT APPLIED PHYSICS, 2012, 12 : S63 - S67
12345