Structural and magnetic properties of Pr-alloyed MnBi nanostructures

被引：43
作者：
Kharel, P. [1 ,2 ]
Shah, V. R. [2 ]
Li, X. Z. [2 ]
Zhang, W. Y. [1 ,2 ]
Skomski, R. [1 ,2 ]
Shield, J. E. [2 ,3 ]
Sellmyer, D. J. [1 ,2 ]
机构：
[1] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA
[2] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA
[3] Univ Nebraska, Lincoln, NE 68588 USA
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2013年 / 46卷 / 09期
基金：
美国国家科学基金会;
关键词：
PERMANENT-MAGNETS; COERCIVITY; MECHANISM;
D O I：
10.1088/0022-3727/46/9/095003
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The structural and magnetic properties of Pr-alloyed MnBi (short MnBi-Pr) nanostructures with a range of Pr concentrations are investigated. The nanostructures include thin films having Pr concentrations 0, 2, 3, 5 and 9 at.% and melt-spun ribbons having Pr concentrations 0%, 2%, 4% and 6%, respectively. Addition of Pr into the MnBi lattice has produced a significant change in the magnetic properties of these nanostructures including an increase in coercivity and structural phase transition temperature, and a decrease in saturation magnetization and anisotropy energy. The highest value of coercivity measured in the films is 23 kOe and in the ribbons is 5.6 kOe. The observed magnetic properties are explained as the consequences of competing ferromagnetic and antiferromagnetic interactions.
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页数：7
相关论文
共 18 条
  • [1] [Anonymous], TOPAS V 4 2
  • [2] VIRTUES AND WEAKNESSES OF THE DOMAIN CONCEPT
    BROWN, WF
    [J]. REVIEWS OF MODERN PHYSICS, 1945, 17 (01) : 15 - 19
  • [3] CONTRIBUTION TO EQUILIBRIUM PHASE-DIAGRAM OF MN-BI SYSTEM NEAR MNBI
    CHEN, T
    [J]. JOURNAL OF APPLIED PHYSICS, 1974, 45 (05) : 2358 - 2360
  • [4] CHEN T, 1974, IEEE T MAGN, VMA10, P581
  • [5] Hard Magnetic Materials: A Perspective
    Coey, J. M. D.
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2011, 47 (12) : 4671 - 4681
  • [6] MAGNETOOPTICAL KERR EFFECTS OF MNBI AND MNBIAL FILMS
    DI, GQ
    IWATA, S
    TSUNASHIMA, S
    UCHIYAMA, S
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1992, 104 (pt 2) : 1023 - 1024
  • [7] RARE-EARTH RICH METALLIC GLASSES .1. MAGNETIC HYSTERESIS
    HADJIPANAYIS, G
    SELLMYER, DJ
    BRANDT, B
    [J]. PHYSICAL REVIEW B, 1981, 23 (07): : 3349 - 3354
  • [8] Spin correlations and Kondo effect in a strong ferromagnet
    Kharel, P.
    Skomski, R.
    Lukashev, P.
    Sabirianov, R.
    Sellmyer, D. J.
    [J]. PHYSICAL REVIEW B, 2011, 84 (01):
  • [9] Spin correlations and electron transport in MnBi:Au films
    Kharel, P.
    Skomski, R.
    Sellmyer, D. J.
    [J]. JOURNAL OF APPLIED PHYSICS, 2011, 109 (07)
  • [10] Transport spin polarization of high Curie temperature MnBi films
    Kharel, P.
    Thapa, P.
    Lukashev, P.
    Sabirianov, R. F.
    Tsymbal, E. Y.
    Sellmyer, D. J.
    Nadgorny, B.
    [J]. PHYSICAL REVIEW B, 2011, 83 (02):
12