the mixed crystal of the cubic (CsCl-type) rare earth intermetallic compound Ce 1- x Nd x Ag (0 ≦ x ≦1). From the estimation of the magnetic contribution to the specific heat, it is found that Ce ion has a doublet state and Nd ion has a quartet state for the ground 4f energy level at any concentration of Nd. The magnetic x - T phase diagram was obtained from the temperature of the maximum in the specific
已经对立方(CsCl型)稀土金属间化合物Ce 1- x Nd x Ag(0≤x≤1)的混晶测量了比热、交流磁化率和磁化强度。从对比热的磁贡献的估计,发现在任何浓度的 Nd 下,对于基 4f 能级,Ce 离子具有双重态,Nd 离子具有四重态。由比热和磁化率中最大值的温度和磁化消失的温度得到磁性x-T相图。对于 0.5 < x < 0.8,反铁磁↔弱铁磁相变发生,在比热中没有观察到异常行为。
Shilkin, S. P.; Volkova, L. S.; Fokin, V. N., Russian Journal of Inorganic Chemistry, 1994, vol. 39, p. 183 - 186
作者:Shilkin, S. P.、Volkova, L. S.、Fokin, V. N.
DOI:——
日期:——
Systematic investigations on the magnetic properties of moderate heavy Fermion CeAg0.68Si1.32 alloy
作者:Swathi S、Arun K、Andrea Dzubinska、Marian Reiffers、Nagalakshmi R
DOI:10.1016/j.physb.2019.411679
日期:2019.12
A cerium based intermetallic compound, CeAg0.68Si1.32, has been synthesized using arc melting technique and its magnetic, transport and thermodynamic properties have been investigated. The sample crystallizes in hexagonal-AlB2 type CeAg0.68Si1.32 phase (space group: P6/mmm) with lattice parameters: a = 0.4208(2) nm; c = 0.4156(2) nm, along with a minor impurity phase. The alloy undergoes two magnetic transitions at temperatures T-1 = 8 K and T-2 = 3.3 K in a magnetic field of B = 0.01 T. The former is ferromagnetic in nature and the latter corresponds to antiferromagnetic transition. In B similar to 0.1 T, antiferromagnetic coupling is broken and metamagnetic transition is witnessed. The influence of CEF is reflected in the estimated mu(eff) and mu(sat) which are lower than that of the theoretical value predicted for Ce3+ ion. The Sommerfeld coefficient(gamma) is higher than the normal metals implying CeAg0.68Si1.32 is a moderate heavy Fermion system with complex magnetic interactions.
Magnetic and Structural Properties of CeAg at High Pressure