Magnetic and magneto-transport properties of double perovskite Ba2−xSrxFeMoO6 system

Effect of partial substitution of Cr3+ for Fe3+ on magnetism, magnetocaloric effect and transport properties of Ba2FeMoO6 double perovskites

“…The significant decrease of the saturation magnetic moment with x might be attributed to the increase of the anti-site disorder defects [22,23] or magnetic dilution due to the substitution of Cr for Fe. The values of S for pure compounds are in good agreement of those values reported in literatures [14,19]. It is worth noting that the observed value of the saturation magnetic moment for Ba 2 FeMoO 6 double perovskite lies slightly below the theoretical value of 4 B /f.u.…”

“…The results show a continuous decrease in the lattice constant with increasing Cr content in the samples (a = 8.061 Å for Ba 2 FeMoO 6 and a = 8.013 Å for Ba 2 CrMoO 6 ) which is obvious due to smaller ionic radius of Cr 3+ (0.615 Å) compared to ionic radius of Fe 3+ (0.645 Å). The lattice parameter values of parent compounds are in good agreement with lattice parameters of Ba 2 FeMoO 6 and Ba 2 CrMoO 6 reported in literatures [16,19].…”

Different oxidation routes for lattice oxygen recovery of double-perovskite type oxides LaSrFeCoO 6 as oxygen carriers for chemical looping steam methane reforming

“…As a subclass of perovskite-type oxides ABO 3 , the double perovskite-type oxide AA BB O 6 have attracted more and more attentions as magnetic materials [1] , superconducting materials [2] , and catalytic materials [3][4][5] , due to its unique structure and multiple properties. In the double perovskite-type A A B B O 6 structure, B −O 6 and B −O 6 octahedras are arranged alternately by the way of corner-sharing with A cations occupy the voids between the octahedral [6] .…”

Synthesis, structure, and high temperature Mössbauer and Raman spectroscopy studies of Ba1.6Sr1.4Fe2WO9 double perovskite

“…A 2 FeMoO 6 (A = Sr, Ba) [2][3][4] and many of its structural materials [5,6], have attracted considerable scientific and technological interest in recent years due to its reported room temperature (415 • C for Sr 2 FeMoO 6 and 330 • C for Ba 2 FeMoO 6 ) low-field magneto-resistance [7,8]. This property, related to the variation of electric resistivity when a magnetic field is applied, is a consequence of the half-metallic character of the double perovskite, and can also been attributed to spin dependent scattering of charge carriers at grain boundaries extended to inter grain-tunneling effect.…”