Metamagnetic transitions and magnetoelectric coupling in acentric and nonpolar 
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Kakarla, D. Chandrasekhar; Wu, Hung-Cheng; Hsieh, Dong-Jie; Sun, Pei-Jun; Dai, G. J.; Lin, Jiunn‐Yuan; Her, Jim-Long; Matsuda, Yasuhiro H.; Deng, Liangzi; Gooch, Melissa; Chu, C. W.; Yang, H. D.

doi:10.1103/physrevb.99.195129

Cited by 12 publications

(1 citation statement)

References 36 publications

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“…The magnetization value steadily increases with magnetic field up to 19.7 kOe, followed by a discontinuous sharp jump at that field and a second weak jump at 27.7 kOe, beyond which it maintains a steady rate with further increase in magnetic field. The transitions at 19.7 and 27.7 kOe, as indicated by H C1 and H C2 , respectively, are in consistent with the previous report [16] and known as magnetic field-induced metamagnetic-like transitions [15,31,32]. In addition, a small shift is observed in H C1 and H C2 values due to the hysteresis between increasing and decreasing field cycles in M(H) curve started at H C1 .…”

Section: Resultssupporting

confidence: 91%

Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er₂BaNiO₅

Pal¹,

Feng²,

Wu³

et al. 2021

J. Phys. D: Appl. Phys.

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The Haldane spin-chain compound Er2BaNiO5 has been known to possess magnetoelectric coupling below the magnetic ordering temperature. Here we report various low-temperature magnetic and magnetocaloric properties, and magnetodielectric effect above magnetic ordering temperature in this compound. The present compound displays a coexistence of conventional and inverse magnetocaloric effects with a large entropy change of 5.9 and −2.5 J/kg K, respectively. Further, it exhibits a remarkable switching between them, which can be tuned with temperature and magnetic field. In addition, evolution of two magnetic field-dependent metamagnetic transitions at 19.7 and 27.7 kOe, and their correlation with magnetocaloric switching effect, make this compound effective for potential applications. On the other hand, demonstration of intrinsic magnetodielectric effect (1.9%) near and above antiferromagnetic ordering temperature, through a moderate coupling between electric dipoles and magnetic spins, establishes this compound as a useful candidate for future research. A detailed analysis of these findings, in a framework of different magnetic interactions and magnetocrystalline anisotropies, is discussed here. Overall, these results may provide a future pathway to tune the magnetic, magnetodielectric, and magnetocaloric properties in this compound toward better application potential.

show abstract

Section: Resultssupporting

confidence: 91%

Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er₂BaNiO₅

Pal¹,

Feng²,

Wu³

et al. 2021

J. Phys. D: Appl. Phys.

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Polaron Hopping Induced Giant Room‐Temperature Magnetodielectric Effect in Disordered Rutile NiNb₂O₆

Wang

Gao

Xie

et al. 2021

Adv Funct Materials

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A majority of the existing magnetodielectric (MD) effects based on spin-lattice coupling or magnetic transitions are either too weak or far below room temperature, which challenges the potential applications of MD materials. Here, a giant room-temperature MD coefficient of −62% at 1 Tesla (T) in disordered rutile NiNb 2 O 6 (r-NiNb 2 O 6 ) ceramic in terms of the spin-dependent polaron hopping is demonstrated. The r-NiNb 2 O 6 exhibits a near-room-temperature dielectric relaxation, which is ascribed to the polaron-hopping-induced grain polarization. This dielectric relaxation process, strikingly, can be controlled by the external magnetic field (H = 1 T) at 220 K< T< 310 K, achieving a giant MD coefficient of −62% (at 10k Hz) at 298 K. Further systematic investigations on the magnetic, electrical, and magnetoelectric coupling properties attribute the MD effect in r-NiNb 2 O 6 to a pure response of the spin-dependent polaron hopping to applied magnetic field. This clearly reveals that the MD effect is subject to a competition among the polaron hopping activation, spin-lattice coupling, and spin thermal fluctuation.

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Field-controlled tunability of novel multifunctional phenomena in Tb-substituted La2CoMnO6: Role of antisite disorder

Pal

Feng

et al. 2021

Ceramics International

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Metamagnetic transitions and magnetoelectric coupling in acentric and nonpolar Pb2MnO4

Cited by 12 publications

References 36 publications

Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er₂BaNiO₅

Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er₂BaNiO₅

Polaron Hopping Induced Giant Room‐Temperature Magnetodielectric Effect in Disordered Rutile NiNb₂O₆

Field-controlled tunability of novel multifunctional phenomena in Tb-substituted La2CoMnO6: Role of antisite disorder

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Metamagnetic transitions and magnetoelectric coupling in acentric and nonpolar Pb2MnO4

Cited by 12 publications

References 36 publications

Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er2BaNiO5

Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er2BaNiO5

Polaron Hopping Induced Giant Room‐Temperature Magnetodielectric Effect in Disordered Rutile NiNb2O6

Field-controlled tunability of novel multifunctional phenomena in Tb-substituted La2CoMnO6: Role of antisite disorder

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Resources

About

Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er₂BaNiO₅

Investigation of field-controlled magnetocaloric switching and magnetodielectric phenomena in spin-chain compound Er₂BaNiO₅

Polaron Hopping Induced Giant Room‐Temperature Magnetodielectric Effect in Disordered Rutile NiNb₂O₆