Magnetic structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mtext>Dy</mml:mtext></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>in hexagonal multiferroic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>DyMnO</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Nandi, S.; Kreyßig, A.; Yan, Jiaqiang; Vannette, M. D.; Lang, J. C.; Tan, L.; Kim, Jong Woo; Prozorov, Ruslan; Lograsso, Thomas A.; McQueeney, R. J.; Goldman, A. I.

doi:10.1103/physrevb.78.075118

Cited by 35 publications

(49 citation statements)

References 19 publications

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“…The Mn 3+ moments order antiferromagnetically below T N1 = 60 K establishing triangular structures in the ab plane [65]. According to Nandi et al [69], the Dy 3+ magnetic moments are antiferromagnetically ordered along the c-axis at temperatures between 8 K and 68 K. The ordering of Dy 3+ spins in this temperature range is linked to the exchange field of Mn 3+ through the 4d-3f exchange interaction. However, by combining the optical second-harmonic generation and neutron diffraction, Wehrenfenning et al [71] have revealed that 3d-4f coupling in the h-DyMnO 3 compound is less rigid than suggested in previous studies.…”

Section: Magnetocaloric Properties Of Rmno 3 Multiferroic Crystalsmentioning

confidence: 98%

“…The orthorhombic and hexagonal symmetries of DyMnO 3 could be considered as representatives of RMnO 3 (R = La to Ho) multiferroics. In fact, although they contain the same rare earth (Dy) element, their magnetic and magnetocaloric properties differ markedly and have been widely documented in the literature [39][40][41][65][66][67][68][69].…”

Section: Magnetocaloric Properties Of Rmno 3 Multiferroic Crystalsmentioning

confidence: 99%

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Review of the Magnetocaloric Effect in RMnO3 and RMn2O5 Multiferroic Crystals

et al. 2017

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Abstract:It is known that some of RMnO 3 and RMn 2 O 5 (R = rare earth) multiferroic crystals reveal a strong interplay between their magnetic and electric order parameters, paving the way for applications in spintronic technologies. Additionally, recent works have also pointed out their potential utilization as refrigerants in magnetocaloric cooling systems for cryogenic tasks. In this paper, recent advances regarding the magnetocaloric properties of both RMnO 3 and RMn 2 O 5 families of multiferroics are reviewed. With the aim of understanding the RMnO 3 and RMn 2 O 5 magnetocaloric features, their structural and magnetic properties are discussed. The physics behind the magnetocaloric effect as well as some of its key thermodynamic aspects are also considered.

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Section: Magnetocaloric Properties Of Rmno 3 Multiferroic Crystalsmentioning

confidence: 98%

Section: Magnetocaloric Properties Of Rmno 3 Multiferroic Crystalsmentioning

confidence: 99%

Review of the Magnetocaloric Effect in RMnO3 and RMn2O5 Multiferroic Crystals

et al. 2017

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“…The magnetic structure determination is a prerequisite for understanding the coupling between ferroelectricity and magnetism in these materials. Several neutron and resonance x-ray studies reveal that RMnO 3 undergo sequence of complicated magnetic phase transitions with decreasing temperature [10][11][12][13][14][15][16] . It has also been shown the rareearth magnetic ordering plays a very important role in the magnetoelectric coupling 17 .…”

Section: Introductionmentioning

confidence: 99%

Anisotropic magnetic properties and giant magnetocaloric effect in antiferromagneticRMnO3crystals (R=Dy, Tb, Ho

et al. 2011

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We have systematically investigated the magnetic properties and magnetocaloric effect (MCE) in RMnO3 (R=Dy, Tb, Ho and Yb) single crystals. Above a critical value of applied field (Hc), RMnO3 undergo a first-order antiferromagnetic (AFM) to ferromagnetic (FM) transition below the ordering temperature (T R N ) of R 3+ moment and a second-order FM to paramagnetic (PM) transition above T R N . Both H and T dependence of M shows that the system is highly anisotropic in the FM as well as PM states and, as a result, the magnetic entropy change (∆SM ) is extremely sensitive to the direction of applied field and can be negative (normal MCE) or positive (inverse MCE). For hexagonal HoMnO3 and YbMnO3 systems, a very small inverse MCE is observed only for H parallel to c axis and it decreases with increasing H and crosses over to normal one above Hc. On the other hand, for orthorhombic DyMnO3 and TbMnO3, though the inverse MCE disappears above Hc along easy-axis of magnetization, it increases rapidly with H along hard-axis of magnetization for T T R N . Except for YbMnO3, the values of ∆SM , relative cooling power and adiabatic temperature change along easy-axis of magnetization are quite large in the field-induced FM state for a moderate field strength. The large values of these parameters, together with negligible hysteresis, suggest that the multiferroic manganites could be potential materials for magnetic refrigeration in the low-temperature region.

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“…[28] Under the special condition of argon gas flow in floating zone growth, however, R = Dy can be synthesized in the hexagonal form as well. [39,40] In this class of compounds ferroelectricity originates at very high temperature due to the displacement of R atoms and buckling of the MnO 5 polyhedra, as discussed in detail above. The magnetism in these compounds arises primarily from the Mn 3+ ions, but the rare-earth ions do order at lower temperature.…”

Section: A Survey Of the Hexagonal Rmno 3 Compoundsmentioning

confidence: 99%

X-ray resonant magnetic scattering investigations of hexagonal multiferroics RMnO3 (R = Dy, Ho, Er)

Nandi

2009

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Magnetic structure ofDy3+in hexagonal multiferroicDyMnO3

Cited by 35 publications

References 19 publications

Review of the Magnetocaloric Effect in RMnO3 and RMn2O5 Multiferroic Crystals

Review of the Magnetocaloric Effect in RMnO3 and RMn2O5 Multiferroic Crystals

Anisotropic magnetic properties and giant magnetocaloric effect in antiferromagneticRMnO3crystals (R=Dy, Tb, Ho

X-ray resonant magnetic scattering investigations of hexagonal multiferroics RMnO3 (R = Dy, Ho, Er)

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