Effect of epitaxy and lattice mismatch on saturation magnetization of γ′-Fe4N thin films

被引：55
作者：
Atiq, Shahid [1 ]
Ko, Hyun-Seok [2 ,3 ]
Siddiqi, Saadat Anwar [1 ]
Shin, Sung-Chul [2 ,3 ]
机构：
[1] Univ Punjab, Ctr Excellence Solid State Phys, Lahore, Pakistan
[2] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea
[3] Korea Adv Inst Sci & Technol, Ctr Nanospin Spintron Mat, Taejon 305701, South Korea
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 22期
关键词：
D O I：
10.1063/1.2940599
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the effect of epitaxial growth and lattice mismatch on the enhancement of saturation magnetization (M(s)) of ferromagnetic gamma(')-Fe(4)N thin films deposited on different single crystal substrates having lattice mismatches from 0% to 11%. It was found that M(s) in the gamma(')-Fe(4)N film increased with increasing degree of epitaxy and minimizing lattice mismatch between the film and the substrate. Maximum saturation magnetization of 1980 +/- 20 emu/cm(3) (about 24% higher than previous result) was obtained with LaAlO(3)(100) substrate having zero lattice mismatch after postannealing of 30 min, which is believed to originate from magnetovolume effect in well-ordered epitaxially grown films.
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  • [1] SYNTHESIS AND PROPERTIES OF ALPHA''-FE16N2 IN MAGNETIC PARTICLES
    BAO, XH
    METZGER, RM
    CARBUCICCHIO, M
    [J]. JOURNAL OF APPLIED PHYSICS, 1994, 75 (10) : 5870 - 5872
  • [2] Growth and properties of Cu3N films and Cu3N/γ′-Fe4N bilayers
    Borsa, DM
    Grachev, S
    Presura, C
    Boerma, DO
    [J]. APPLIED PHYSICS LETTERS, 2002, 80 (10) : 1823 - 1825
  • [3] Magnetic nitrides
    Coey, JMD
    Smith, PAI
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) : 405 - 424
  • [4] Structure and magnetism of single-phase epitaxial γ′-Fe4N -: art. no. 144402
    Costa-Krämer, JL
    Borsa, DM
    García-Martín, JM
    Martín-González, MS
    Boerma, DO
    Briones, F
    [J]. PHYSICAL REVIEW B, 2004, 69 (14): : 144402 - 1
  • [5] Magnetisation reversal of epitaxial films of γ′-Fe4N on Cu(100)
    Ecija, D.
    Jimenez, E.
    Camarero, J.
    Gallego, J. M.
    Vogel, J.
    Mikuszeit, N.
    Sacristan, N.
    Miranda, R.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 316 (02) : 321 - 324
  • [6] THE OCCURRENCE AND THE CRYSTAL STRUCTURE OF ALPHA''-IRON NITRIDE - A NEW TYPE OF INTERSTITIAL ALLOY FORMED DURING THE TEMPERING OF NITROGEN-MARTENSITE
    JACK, KH
    [J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1951, 208 (1093): : 216 - 224
  • [7] NEW MAGNETIC MATERIAL HAVING ULTRAHIGH MAGNETIC-MOMENT
    KIM, TK
    TAKAHASHI, M
    [J]. APPLIED PHYSICS LETTERS, 1972, 20 (12) : 492 - +
  • [8] Growth and characterization of sputtered epitaxial γ′Fe4N and NbN films and bilayers using electron backscatter diffraction patterns and magnetometry
    Loloee, R
    Nikolaev, KR
    Pratt, WP
    [J]. APPLIED PHYSICS LETTERS, 2003, 82 (19) : 3281 - 3283
  • [9] Critical fields of Fe4N/NbN ferromagnetic/superconducting multilayers
    Mattson, JE
    Potter, CD
    Conover, MJ
    Sowers, CH
    Bader, SD
    [J]. PHYSICAL REVIEW B, 1997, 55 (01) : 70 - 73
  • [10] Structural and magnetic properties of triode-sputtered epitaxial γ′-Fe4N films deposited on SrTiO3 (001) substrates
    Nikolaev, KR
    Krivorotov, IN
    Dahlberg, ED
    Vas'ko, VA
    Urazhdin, S
    Loloee, R
    Pratt, WR
    [J]. APPLIED PHYSICS LETTERS, 2003, 82 (25) : 4534 - 4536
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