The initial ac susceptibility of Gd/W(110) films in UHV: a new method to investigate magnetism in ultrathin films
作者： U. Stetter , A. Aspelmeier , K. Baberschke
DOI: 10.1016/0304-8853(92)90309-C
关键词:
摘要: The ac susceptibility (χac) of a 300 A Gd film grown on W(110) has been investigated in-situ under UHV conditions. full analysis χac is given in which the domain and paramagnetic signals are clearly separated. theoretical simulation para- ferromagnetic contributions allow precise discussion transition temperature, Hopkinson maximum anisotropy energy Keff. It at least factor ten larger than that polycrystalline bulk Gd. Keff follows power law (Tc − T)K with 3β < K 5β. Annealing as-grown decreases Keff(T) by five.
harvard.edu
elsevier.com
sci-hub.se 参考文章(27)
C. Rau, M. Robert, Surface magnetization of Gd at the bulk Curie temperature Physical Review Letters. ,vol. 58, pp. 2714- 2717 ,(1987) , 10.1103/PHYSREVLETT.58.2714
D. Weller, S. F. Alvarado, W. Gudat, K. Schröder, M. Campagna, Observation of surface-enhanced magnetic order and magnetic surface reconstruction on Gd(0001). Physical Review Letters. ,vol. 54, pp. 1555- 1558 ,(1985) , 10.1103/PHYSREVLETT.54.1555
J. C. Le Guillou, J. Zinn-Justin, Critical Exponents for the N Vector Model in Three-Dimensions from Field Theory Physical Review Letters. ,vol. 39, pp. 95- 98 ,(1977) , 10.1103/PHYSREVLETT.39.95
B. C. Gerstein, F. Olander, Initial Susceptibility Study of Thermal Hysteresis in Gd in the Neighborhood of the Curie Region; Frequency Dependence of the Magnetization Journal of Applied Physics. ,vol. 42, pp. 3438- 3445 ,(1971) , 10.1063/1.1660750
P A Dowben, D LaGraffe, M Onellion, Final-state symmetry effects in photoemission of thin Gd overlayers Journal of Physics: Condensed Matter. ,vol. 1, pp. 6571- 6587 ,(1989) , 10.1088/0953-8984/1/37/006
M. Taborelli, R. Allenspach, G. Boffa, M. Landolt, Magnetic coupling of surface adlayers: Gd on Fe(100). Physical Review Letters. ,vol. 56, pp. 2869- 2872 ,(1986) , 10.1103/PHYSREVLETT.56.2869
K. Baberschke, M. Farle, M. Zomack, The ferromagnetic order and the critical exponent γ of Gd monolayers and thin films on W(110) Applied Physics A. ,vol. 44, pp. 13- 18 ,(1987) , 10.1007/BF00617887
Dongqi Li, C.W. Hutchings, P.A. Dowben, C. Hwang, Rong-Tzong Wu, M. Onellion, A.B. Andrews, J.L. Erskine, Angle-resolved photoemission evidence for a Gd(0001) surface state Journal of Magnetism and Magnetic Materials. ,vol. 99, pp. 85- 90 ,(1991) , 10.1016/0304-8853(91)90050-K
K.R. Sydney, D.H. Chaplin, G.V.H. Wilson, AC susceptibility and temperature modulation studies of gadolinium near the Curie point Journal of Magnetism and Magnetic Materials. ,vol. 2, pp. 345- 356 ,(1976) , 10.1016/0304-8853(76)90046-9
Ruqian Wu, A.J. Freeman, Theoretical determination of antiferromagnetic coupling and surface state for Gd(0001) Journal of Magnetism and Magnetic Materials. ,vol. 99, pp. 81- 84 ,(1991) , 10.1016/0304-8853(91)90049-G