Polymorphism and crystal reorientation governing the magnetic anisotropy in Gd thin films

被引:0
作者
Bernardino, S. V. [1 ]
Figueiredo, L. C. [2 ]
Merino, I. L. C. [3 ]
Bueno, T. E. P. [4 ]
Passamani, E. C. [1 ,4 ]
Nascimento, V. P. [1 ,4 ,5 ]
机构
[1] Univ Fed Espirito Santo, Programa Posgrad Fis, BR-29075910 Vitoria, Brazil
[2] Univ Brasilia, Inst Fis, BR-70910900 Brasilia, Brazil
[3] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
[4] Univ Fed Espirito Santo, Dept Fis, BR-29075910 Vitoria, Brazil
[5] Fernando Ferrari Ave,510,Campus Goiabeiras, BR-29075910 Vitoria, ES, Brazil
关键词
Gd thin film; Polymorphism; Magnetic anisotropy; Magnetocaloric effect; Crystal orientation; FERROMAGNETIC-RESONANCE; MAGNETOCRYSTALLINE ANISOTROPY; TEMPERATURE-DEPENDENCE; CURIE-TEMPERATURE; SYSTEM; FE; CO;
D O I
10.1016/j.jmmm.2023.171118
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
200 nm Gd films were prepared on Si (100) wafers under different conditions [substrate temperature (TS) and bias voltage on the substrate (prior to deposition)] to study the influence of Gd polymorphism and crystal orientations on their magnetic properties. The Gd hexagonal close-packed (Gd-hcp) structure had a crystalline reorientation from (002) to (100) preferential orientation concomitantly with appearance of (1 1 1) preferentially oriented Gd face-centered cubic (Gd-fcc) structure when TS increases from room temperature to 673 K. The crystallite orientations were spreader in the highest TS. All Gd films displayed thermal hysteresis of (6 & PLUSMN; 1) K near to room temperature associated with their magnetocaloric properties. The analysis of the ferromagnetic resonance results, taken at different temperatures, indicated that the in-plane magnetization is favored by the emergence of Gd-fcc phase and (10 0) preferential orientation of the Gd-hcp structure. This observation suggests that the bulk Gd spin reorientation effect is even a more complex issue in thin films, since the structural reorientation of the hcp c-axis may also emerge and internal strains favor a growth of a Gd-fcc structure that can strongly influence the effective anisotropy in sputtered Gd films. Therefore, our results bring new insights on structural and magnetic properties of Gd thin films that have aroused interest of the scientific community in recent decades.
引用
收藏
页数:8
相关论文
共 46 条
  • [11] MAGNETOCRYSTALLINE ANISOTROPY OF GADOLINIUM
    CORNER, WD
    ROE, WC
    TAYLOR, NR
    [J]. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1962, 80 (516): : 927 - &
  • [12] OBSERVATION OF FACE-CENTERED CUBIC GD, TB, DY, HO, ER AND TM IN FORM OF THIN-FILMS AND THEIR OXIDATION
    CURZON, AE
    CHLEBEK, HG
    [J]. JOURNAL OF PHYSICS F-METAL PHYSICS, 1973, 3 (01): : 1 - 5
  • [13] Magnetic phase transitions and the magnetothermal properties of gadolinium
    Dan'kov, SY
    Tishin, AM
    Pecharsky, VK
    Gschneidner, KA
    [J]. PHYSICAL REVIEW B, 1998, 57 (06) : 3478 - 3490
  • [14] Grain-boundary-induced spin disorder in nanocrystalline gadolinium
    Doebrich, F.
    Elmas, M.
    Ferdinand, A.
    Markmann, J.
    Sharp, M.
    Eckerlebe, H.
    Kohlbrecher, J.
    Birringer, R.
    Michels, A.
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (15)
  • [15] THICKNESS-DEPENDENT CURIE-TEMPERATURE OF GD(0001)/W(110) AND ITS DEPENDENCE ON THE GROWTH-CONDITIONS
    FARLE, M
    BABERSCHKE, K
    STETTER, U
    ASPELMEIER, A
    GERHARDTER, F
    [J]. PHYSICAL REVIEW B, 1993, 47 (17): : 11571 - 11574
  • [16] Uncovering magnetic properties of NiFe/WTi multilayers by FMR and SWR analyses
    Figueiredo, L. C.
    Pelegrini, F.
    Biondo, A.
    Pessoa, M. S.
    Nascimento, V. P.
    Baggio-Saitovitch, E.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2020, 498
  • [17] MAGNETOCRYSTALLINE ANISOTROPY OF GADOLINIUM
    GRAHAM, CD
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1962, 17 (08) : 1310 - &
  • [18] Heinrich B., 1994, Ultrathin Magn. Struct. II, P195
  • [19] Magnetic anisotropy in nanostructured gadolinium
    Hsu, Chin-Jui
    Prikhodko, Sergey V.
    Wang, Chiu-Yen
    Chen, Lih-Juann
    Carman, Gregory P.
    [J]. JOURNAL OF APPLIED PHYSICS, 2012, 111 (05)
  • [20] Magnetic anisotropy in metallic multilayers
    Johnson, MT
    Bloemen, PJH
    denBroeder, FJA
    deVries, JJ
    [J]. REPORTS ON PROGRESS IN PHYSICS, 1996, 59 (11) : 1409 - 1458