Multiferroicity in orthorhombic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>R</mml:mi><mml:mi>Mn</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>R</mml:mi><mml:mo>=</mml:mo><mml:mi>Dy</mml:mi></mml:mrow><mml:mo>,</mml:mo><mml:mspace width="0.16em" /><mml:mi>Tb</mml:mi></mml:math>, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mm

Aoyama, T.; Iyama, Ayato; Shimizu, Katsuya; Kimura, T.

doi:10.1103/physrevb.91.081107

Cited by 53 publications

(41 citation statements)

References 32 publications

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“…This is in tune with what is observed in the Tb, Gd and Dy compounds 16,17 . In addition, we observe that, while they can compete with the E * -AFM state at low pressure, both 60…”

Section: A A-afm To Fm Transitionsupporting

confidence: 88%

Pressure-induced insulator–metal transition in EuMnO₃

Qiu

Bousquet

Cano

2017

J. Phys.: Condens. Matter

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We study the influence of external pressure on the electronic and magnetic structure of EuMnO3 from first-principles calculations. We find a pressure-induced insulator-metal transition at which the magnetic order changes from A-type antiferromagnetic to ferromagnetic with a strong interplay with Jahn-Teller distortions. In addition, we find that the non-centrosymmetric E * -type antiferromagnetic order can become nearly degenerate with the ferromagnetic ground state in the high-pressure metallic state. This situation can be exploited to promote a magnetically-driven realization of a non-centrosymmetric (ferroelectric-like) metal.

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“…This is in tune with what is observed in the Tb, Gd and Dy compounds 16,17 . In addition, we observe that, while they can compete with the E * -AFM state at low pressure, both 60…”

Section: A A-afm To Fm Transitionsupporting

confidence: 88%

Pressure-induced insulator–metal transition in EuMnO₃

Qiu

Bousquet

Cano

2017

J. Phys.: Condens. Matter

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“…Recently, a number of multiferroics such as Ni 3 TeO 6 ( α H = 1300 psm −1 ) 14 , and Fe 2 Mo 3 O 8 ( α H = 9000 psm −1 ) 15 , high-pressure phase of GdMnO 3 , DyMnO 3 and TbMnO 3 ( α H ~ 3000–9000 psm −1 ) 16 , GdMn 2 O 5 ( α H ~ 9000 psm −1 ) 17 show strong ME effects. However, large magnetic fields (a few teslas) are needed to induce a large change of P in these compounds.…”

Section: Introductionmentioning

confidence: 99%

Giant magnetoelectric effects achieved by tuning spin cone symmetry in Y-type hexaferrites

et al. 2017

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Multiferroics materials, which exhibit coupled magnetic and ferroelectric properties, have attracted tremendous research interest because of their potential in constructing next-generation multifunctional devices. The application of single-phase multiferroics is currently limited by their usually small magnetoelectric effects. Here, we report the realization of giant magnetoelectric effects in a Y-type hexaferrite Ba0.4Sr1.6Mg2Fe12O22 single crystal, which exhibits record-breaking direct and converse magnetoelectric coefficients and a large electric-field-reversed magnetization. We have uncovered the origin of the giant magnetoelectric effects by a systematic study in the Ba2-xSrxMg2Fe12O22 family with magnetization, ferroelectricity and neutron diffraction measurements. With the transverse spin cone symmetry restricted to be two-fold, the one-step sharp magnetization reversal is realized and giant magnetoelectric coefficients are achieved. Our study reveals that tuning magnetic symmetry is an effective route to enhance the magnetoelectric effects also in multiferroic hexaferrites.

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“…38 Recently, Aoyama et al . reported a giant increase in polarization and switching of the direction of polarization under pressure in orthorhombic rare earth manganites 39,40 . Pressure acts in different ways than the magnetic field in multiferroics.…”

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confidence: 99%

Pressure-induced decoupling of rare-earth moments and Mn spins in multiferroicGdMn2O5

et al. 2015

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The effects of pressure on the ferroelectric properties of multiferroic GdMn2O5 is studied up to 18.2 kbar. Above a critical pressure of pc ≈ 10 kbar, the ferroelectric transition splits into two, with the first transition shifted to higher temperature. The pressure-temperature phase diagram is derived. The results indicate a pressure-induced decoupling of the Gd moments from the Mn spin system. The conclusion is supported by thermal expansion data which show a large increase of the c-axis at the ambient-pressure ferroelectric transition. The pressure-induced contraction of the c lattice parameter is considered to be the origin of the decoupling of both magnetic subsystems above pc.

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Multiferroicity in orthorhombicRMnO3(R=Dy,Tb, and

Cited by 53 publications

References 32 publications

Pressure-induced insulator–metal transition in EuMnO₃

Pressure-induced insulator–metal transition in EuMnO₃

Giant magnetoelectric effects achieved by tuning spin cone symmetry in Y-type hexaferrites

Pressure-induced decoupling of rare-earth moments and Mn spins in multiferroicGdMn2O5

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Multiferroicity in orthorhombicRMnO3(R=Dy,Tb, and

Cited by 53 publications

References 32 publications

Pressure-induced insulator–metal transition in EuMnO3

Pressure-induced insulator–metal transition in EuMnO3

Giant magnetoelectric effects achieved by tuning spin cone symmetry in Y-type hexaferrites

Pressure-induced decoupling of rare-earth moments and Mn spins in multiferroicGdMn2O5

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Pressure-induced insulator–metal transition in EuMnO₃

Pressure-induced insulator–metal transition in EuMnO₃