Preparation of the noncentrosymmetric ferrimagnetic phase La0.9Ba0.1Mn0.96O2.43 by topochemical reduction

Nanosized MnFe2O4 phase with diameters in the range 13.7 to 100 nm were produced by calcination and sintering treatments in the system zNb2O5 · (50 – z)MnO · 50Fe2O3 with z having values between 0 and 20. Nb5+ ions are believed to give rise to vacancies in the Mn2+ sites, which break up the coupling of ferrimagnetically active oxygen polyhedra. The Curie temperature decreases as the size of the MnFe2O4 phase is reduced. This is explained on the basis of a decrease in the number of exchange pairs of the type Mn2+–Fe3+. The coercivity increases with a decrease in the size of the ferrimagnetic phase. This is believed to arise due to a decrease in saturation magnetization as the size of the MnFeO4 phase is reduced.

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Cation distribution dependent magnetic properties in CoCr2−xFexO4 (x = 0.1 to 0.5): EXAFS, Mössbauer and magnetic measurements

Dalton Transactions ◽

10.1039/c7dt01831b ◽

2017 ◽

Vol 46 (31) ◽

pp. 10300-10314 ◽

Cited By ~ 16

Author(s):

D. Kumar ◽

A. Banerjee ◽

A. Mahmoud ◽

Chandana Rath

Keyword(s):

Phase Transition ◽

Magnetic Properties ◽

Curie Temperature ◽

Cation Distribution ◽

Magnetic Measurements ◽

Magnetic Transitions ◽

Ferrimagnetic Phase ◽

Evolution Of Structure ◽

Lock In

Evolution of structure and rich magnetic transitions such as paramagnetic to ferrimagnetic phase transition at Curie temperature (TC), spiral ordering temperature (TS) and lock-in temperature (TL) have been discussed in CoCr2O4 spinel multiferroic after substituting Fe.

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Predicting a Ferrimagnetic Phase ofZn2FeOsO6with Strong Magnetoelectric Coupling

Physical Review Letters ◽

10.1103/physrevlett.114.147204 ◽

2015 ◽

Vol 114 (14) ◽

Cited By ~ 56

Author(s):

P. S. Wang ◽

W. Ren ◽

L. Bellaiche ◽

H. J. Xiang

Keyword(s):

Magnetoelectric Coupling ◽

Ferrimagnetic Phase

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Ferrimagnetic phase transition in the system Li0.5Fe2.52−x GaxO4 in the vicinity of the multicritical point of the x-T phase diagram

Journal of Experimental and Theoretical Physics ◽

10.1134/1.558603 ◽

1998 ◽

Vol 87 (6) ◽

pp. 1122-1128 ◽

Cited By ~ 2

Author(s):

N. N. Efimova ◽

M. B. Ustimenkova

Keyword(s):

Phase Transition ◽

Phase Diagram ◽

Multicritical Point ◽

Ferrimagnetic Phase ◽

T Phase

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Ferrimagnetic order and spontaneous magnetization in a mixed-spin XXZ chain with single-ion anisotropy

International Journal of Modern Physics B ◽

10.1142/s0217979215500708 ◽

2015 ◽

Vol 29 (12) ◽

pp. 1550070 ◽

Cited By ~ 1

Author(s):

Ling Qiang ◽

Guang-Hua Liu ◽

Guang-Shan Tian

Keyword(s):

Ground State ◽

Spontaneous Magnetization ◽

Quantum Phase Transitions ◽

Infinite Time ◽

Bipartite Entanglement ◽

Ferrimagnetic Phase ◽

Mixed Spin ◽

Xxz Chain ◽

Ising Limit ◽

Two Phases

The ground-state properties of the spin-(1/2, 1) mixed-spin XXZ chain with single-ion anisotropy (D) are investigated by the infinite time-evolving block decimation (iTEBD) method. A ground-state phase diagram including three phases, i.e., a fully polarized phase, an XY phase and a ferrimagnetic phase, is obtained. The ferrimagnetic phase is found to extend to the regions with (Δ > 1, D > 0) and (Δ < 1, D < 0), where Δ denotes the coupling anisotropy between the localized spins. By the discontinuous behavior of bipartite entanglement, quantum phase transitions (QPTs) between the XY phase and the other two phases are verified to be of the first-order. Furthermore, two constant spontaneous magnetization values (Mz = 3/2 and 1/2) are observed in the fully polarized and the ferrimagnetic phases, respectively. In both cases of Δ → +∞ and D → -∞, the ground state tends to the Ising limit. In addition, both the long-range ferromagnetic and antiferromagnetic orders are found to coexist in the whole ferrimagnetic phase.

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