Extension of the molecular-field theory on the magnetic behaviors in paramagnetic Dy3Ga5O12

作者: Wei Wang , Yuan Yue

DOI: 10.1016/J.JALLCOM.2009.08.115

关键词:

摘要: Abstract The magnetic behaviors of the paramagnetic dysprosium gallium garnet (DyGaG) are theoretically investigated in terms an extensional molecular-field theory. contribution exchange interaction between ions to properties DyGaG is further explored. Here, as DyGaG, our model, two sublattices A and B suggested. corresponding discussed, it found that χ  >  DyGaG. Meanwhile, field coefficients λ 1 2 qualitatively analyzed. optimum fitting parameters α associated with provided, some interesting conclusions about these drawn. Then, available experiments successfully fitted by theoretical model. Additionally, analysis high-field presented.

参考文章(30)
Gerald F. Dionne, Molecular‐field coefficients of MnFe2O4 and NiFe2O4 spinel ferrite systems Journal of Applied Physics. ,vol. 63, pp. 3777- 3779 ,(1988) , 10.1063/1.340637
Gerald F. Dionne, Molecular-orbital solution of magnetic exchange in spinel ferrites Journal of Applied Physics. ,vol. 99, ,(2006) , 10.1063/1.2171947
Y. K. Tsui, N. Kalechofsky, C. A. Burns, P. Schiffer, Study of the low temperature thermal properties of the geometrically frustrated magnet: Gadolinium gallium garnet Journal of Applied Physics. ,vol. 85, pp. 4512- 4514 ,(1999) , 10.1063/1.370392
P. Tils, M. Loewenhaupt, K.H.J. Buschow, R.S. Eccleston, Intersublattice exchange coupling in Gd–Mn compounds studied by INS Journal of Alloys and Compounds. ,vol. 279, pp. 123- 126 ,(1998) , 10.1016/S0925-8388(98)00688-4
S Kervan, Y Elerman, M Acet, Investigation of the crystal structure and magnetic properties of Nd1−xGdxMn2Si2 compounds Journal of Alloys and Compounds. ,vol. 335, pp. 70- 76 ,(2002) , 10.1016/S0925-8388(01)01818-7
Gerald F. Dionne, Paul F. Tumelty, Molecular‐field coefficients of Tm3Fe5O12 Journal of Applied Physics. ,vol. 50, pp. 8257- 8258 ,(1979) , 10.1063/1.325931
H.W. Capel, Magnetic properties of rare earth ions in aluminium and gallium garnets Physica D: Nonlinear Phenomena. ,vol. 31, pp. 1152- 1176 ,(1965) , 10.1016/0031-8914(65)90160-6
S. Kervan, Exchange interactions in Gd1−xCexMn2Ge2 compounds Journal of Alloys and Compounds. ,vol. 368, pp. 8- 12 ,(2004) , 10.1016/J.JALLCOM.2003.07.012
J. Filippi, J.C. Lasjaunias, A. Ravex, F. Tchéou, J. Rossat-Mignod, Specific heat of dysprosium gallium garnet between 37 mK and 2 K Solid State Communications. ,vol. 23, pp. 613- 616 ,(1977) , 10.1016/0038-1098(77)90531-2
Wei Wang, Deyao Li, Properties of exchange interaction in Yb3Fe5O12 under extreme conditions Journal of Magnetism and Magnetic Materials. ,vol. 321, pp. 3307- 3310 ,(2009) , 10.1016/J.JMMM.2009.05.068