XY theoritical phase diagrams of the thiospinels AB2xB′2−2xS4

Antimony valence and the magnetization processes in the spinels (Cu)[CrSb]Se4

“…coexistence of ferromagnetism and ferroelectricity [1,2], complex spin order and spin dimerization [3][4][5], spin-orbital liquid [6], orbital glass [7], heavy-fermion properties [8], large magnetostriction and negative thermal expansion [9], giant magnetoresistance [10][11][12][13][14][15][16][17], spin glass state [16][17][18][19][20][21][22][23][24][25][26][27][28] and thermoelectric effect [29]. One has to admit that the giant magnetoresistance effect and spin glass state effect can be useful in the switching facilities and spintronics.…”

Study of Magnetic Properties in Spinels Co x Zn1−x Cr2O4 systems

“…In the last work, the authors [4] used the probability law to calculate the exchange integrals. In this work, we have applied the probability law in the diluted spinels A x A 1−x B 2 X 4 systems, only the random placement of the ions A and B leads to the spatial fluctuations of the signs and magnitudes of the super-exchange interactions between the magnetic ions A and B.…”

“…where n is the total number of lattice sites inside a sphere with the volume 4 3 πR 3 i (R i denotes the distance between the sites i and j ), n is the number of cations in the P th coordination sphere around a given cation chosen as the central one; for this structure n = 3, while i varies from 0 to 3. The exchange integral for such an occupation is assumed to be:…”

Magnetic properties of B and AB-spinels Zn1−xMxFe2O4 (M=Ni, Mg) materials

“…The authors [14,15] in the last work, used the probability law to calculate the exchange interactions. In this work, we have applied the probability law in the diluted spinels Zn 1−x M x Fe 2 O 4 (M = Mg, Ni) systems, only the random placement of the ions A and B leads to the spatial fluctuations of the signs and magnitudes of the superexchange interaction between the magnetic ions A and B.…”