Structural and magnetic properties of LaFe0.5Cr0.5O3 studied by neutron diffraction, electron diffraction and magnetometry

Exchange bias in a mixed metal oxide based magnetocaloric compound YFe0.5Cr0.5O3

“…This indicates that magnetic correlation persist upto the highest measurement temperature. This mismatch between experimental and theoretical moments is not unusual and has been reported in other similar compounds [1,30].…”

“…The combination of 3d-3d or 3d-4d/5d element in a perovskite structured oxide of the form AB′ 1-x where Ln=La, Y and Dy [1][2][3][4][5][6][7]. Combining the two transitions metal within the perovskite structure can be an effective approach of enhance the magnetic property and at the same time tune/induce functional properties as compared to their parent compounds.…”

Ferroelectric substrate effects on the magnetism, magnetotransport, and electroresistance of La0.7Ca0.3MnOAlberca1, Munuera2, Tornos3 et al. 2012Phys. Rev. B273210View full textAdd to dashboardCite

“…This behavior is characteristic of frozen AFM correlations in a frustrated system. [34][35][36] Magnetotransport properties are extremely sensitive to changes in double-exchange interactions, which are in turn strongly affected by the variations in the angles between MnO 6 octahedra induced by strain or by changes in the crystal field. [19][20][21] insulating clusters intermixed into the long-range conducting FM order grow with increasing temperature, and electronic transport becomes dominated by electric percolation through FM regions.…”

Manganese-mediated ferromagnetism in La2Fe1−x Mn2x Cr1−x O6 perovskite oxides

“…The magnetic ordering temperature (T N ) estimated from the FC and ZFC data at 100 Oe is ~200 K. The results are largely in agreement with the earlier report on this oxide. 4 Interestingly, there is a positive deviation of the susceptibility/ magnetization from the Curie-Weiss behaviour at T < 200 K. The susceptibility enhancement corresponds to a small μ B ~ 0⋅027 per formula unit which likely indicates a weak short range ferromagnetic …”

“…Perovskite La 2 FeCrO 6 would provide another illustration of ferromagnetic coupling of spins through Fe III (t 2g 3 e g 2 )-O-Cr III (t 2g 3 e g 0 ) superexchange according to G-K rule, but ceramic samples of this oxide display only an antiferromagnetic behaviour attributed to a disordered distribution of Fe III and Cr III in the perovskite structure. 4 However, Ueda et al 5 have achieved a ferromagnetic spin order (T C ~ 375 K) in the superlattices consisting of alternate layers of LaCrO 3 and LaFeO 3 along [111] direction, demonstrating that linear Fe III -O-Cr III SE interaction indeed occurs according to G-K rule. Jahn-Teller distorted high-spin Mn III (d 4 : t 2g 3 e g 1 ) is known to couple Fe III /Cr III ferro/ferrimagnetically in bulk ceramic materials [6][7][8][9] as well as in artificial superlattices.…”