Spin and Dipole Ordering in Ni2InSbO6 and Ni2ScSbO6 with Corundum-Related Structure

Иванов, С. А.; Mathieu, Roland; Nordblad, Per; Tellgren, R.; Ritter, C.; Политова, Е. Д.; Калева, Г. М.; Мосунов, А. В.; Stefanovich, S. Yu.; Weil, Mat­thias

doi:10.1021/cm304095s

Cited by 46 publications

(65 citation statements)

References 45 publications

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“…On the contrary, w ab exhibits a weak temperature dependence below T N . Although the observed T N E55 K is slightly higher than the reported T N ¼ 52 K (refs [31][32][33], the temperature dependence of magnetic properties is consistent with collinear AFM ordering of Ni spins along the c axis, in accordance with the result of the previous neutron-diffraction study 31 . Surprisingly, we discovered a clear dielectric anomaly at T N , evident in the temperature dependence of dielectric constant e(T) (Fig.…”

Section: Resultssupporting

confidence: 90%

Non-hysteretic colossal magnetoelectricity in a collinear antiferromagnet

et al. 2014

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The manipulation of magnetic ordering with applied electric fields is of pressing interest for new magnetoelectric devices and information storage applications. Recently, such magnetoelectric control was realized in multiferroics. However, their magnetoelectric switching is often accompanied by significant hysteresis, resulting from a large barrier, separating different ferroic states. Hysteresis prevents robust switching, unless the applied field overcomes a certain value (coercive field). Here we address the role of a switching barrier on magnetoelectric control, and identify a material, collinear antiferromagnetic and pyroelectric Ni 3 TeO 6 , in which magnetoelectric switching occurs without hysteresis. The barrier between two magnetic states in the vicinity of a spin-flop transition is almost flat, and thus small changes in external electric/magnetic fields allow to switch the ferroic state through an intermediate state in a continuous manner, resulting in a colossal magnetoelectric response. This colossal magnetoelectric effect resembles the large piezoelectric effect at the morphotropic phase boundary in ferroelectrics.

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Section: Resultssupporting

confidence: 90%

Non-hysteretic colossal magnetoelectricity in a collinear antiferromagnet

et al. 2014

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“…In Mn 2 ScSbO 6 and Ni 2 B SbO 6 ( B = Sc, In), the non-magnetic ions create holes in the Mn/Ni magnetic sublattices preventing direct exchange between the magnetic sites 3, 6 . All these systems order AFM, but with no face-shared magnetic M 2 O 9 ( M = magnetic cation) dimers or magnetic frustration, it is unlikely that magnetostriction-driven changes in polarization occur.…”

Section: Resultsmentioning

confidence: 99%

“…All these systems order AFM, but with no face-shared magnetic M 2 O 9 ( M = magnetic cation) dimers or magnetic frustration, it is unlikely that magnetostriction-driven changes in polarization occur. However, it is interesting that without nearest-neighbor exchanges, Ni 2 B SbO 6 ( B = Sc, In) is significantly more frustrated than Ni 3 TeO 6 and adopts a non-collinear, helical magnetic structure with components of the Ni 2+ moments along both the c direction and in the ab plane 3 . NTO systems with three magnetic cations include Mn 2 FeWO 6 7 , Mn 2 FeMoO 6 4 , and Ni 3 TeO 6 5, 49–52 and exhibit complex magnetic behavior.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, considering the potential combinations of A 1, A 2, B , and B ’ in the ( A 1 A 2) BB ’O 6 corundum family (where A 1, A 2, and B , or any two of them could be the same element, or all cations could be different), a very large number of new multifunctional materials are anticipated with the assistance of high pressure (HP) synthesis techniques. However, to the best of our knowledge, only 14 polar and magnetic A 2 BB ’O 6 -type corundum-related compounds have been reported to date (see Supplementary Table 1); of these, 11 compounds were experimentally prepared: Ni 3 TeO 6 5, 20 , Ni 2 ScSbO 6 3 , and Ni 2 InSbO 6 3 were synthesized at ambient pressure, while the rest can only be stabilized at HP. Zn 2 FeOsO 6 21 and A 2 FeMoO 6 ( A = Sc, Lu) 22 have only been predicted by first principle calculations to show considerable large P S .…”

Section: Introductionmentioning

confidence: 99%

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Magnetostriction-polarization coupling in multiferroic Mn2MnWO6

McCabe

Stephens

et al. 2017

Nat Commun

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Double corundum-related polar magnets are promising materials for multiferroic and magnetoelectric applications in spintronics. However, their design and synthesis is a challenge, and magnetoelectric coupling has only been observed in Ni3TeO6 among the known double corundum compounds to date. Here we address the high-pressure synthesis of a new polar and antiferromagnetic corundum derivative Mn2MnWO6, which adopts the Ni3TeO6-type structure with low temperature first-order field-induced metamagnetic phase transitions (T N = 58 K) and high spontaneous polarization (~ 63.3 μC·cm−2). The magnetostriction-polarization coupling in Mn2MnWO6 is evidenced by second harmonic generation effect, and corroborated by magnetic-field-dependent pyroresponse behavior, which together with the magnetic-field-dependent polarization and dielectric measurements, qualitatively indicate magnetoelectric coupling. Piezoresponse force microscopy imaging and spectroscopy studies on Mn2MnWO6 show switchable polarization, which motivates further exploration on magnetoelectric effect in single crystal/thin film specimens.

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“…Rather, the magnetic order modifies the existing electric polarization associated with the polar space group which is established already at very high temperature (a possible ferroelectric T C of ∼1000 K was reported [37]). …”

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confidence: 98%

Successive Magnetic-Field-Induced Transitions and Colossal Magnetoelectric Effect inNi3TeO6

et al. 2015

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We report the discovery of a metamagnetic phase transition in a polar antiferromagnet Ni 3 TeO 6 that occurs at 52 T. The new phase transition accompanies a colossal magnetoelectric effect, with a magneticfield-induced polarization change of 0.3 μC=cm 2 , a value that is 4 times larger than for the spin-flop transition at 9 T in the same material, and also comparable to the largest magnetically induced polarization changes observed to date. Via density-functional calculations we construct a full microscopic model that describes the data. We model the spin structures in all fields and clarify the physics behind the 52 T transition. The high-field transition involves a competition between multiple different exchange interactions which drives the polarization change through the exchange-striction mechanism. The resultant spin structure is rather counterintuitive and complex, thus providing new insights on design principles for materials with strong magnetoelectric coupling. Magnetoelectric (ME) multiferroics have been extensively studied recently to understand the mechanisms responsible for cross-coupling between magnetism and ferroelectricity, which is at the heart of their promise for applications in multifunctional devices [1][2][3][4][5][6]. In this class of materials, at least three mechanisms are known to induce ferroelectric polarization (P) upon magnetic order: (1) the spin current or inverse Dzyaloshinskii-Moriya (DM) interaction in a spin-cycloidal structure which is mediated by antisymmetric exchange [7][8][9], (2) the symmetric exchange-striction mechanism in collinear magnets [10], and (3) the hybridization between metal d and ligand p orbitals that is modulated by spin direction [11]. A majority of ME couplings that have been studied to date involve mechanisms (1) and (3). However, the symmetric exchange mechanism (2) can, in principle, also lead to large ME effects.Another route to a large ME effect is to consider magnetic systems that have a polar structure. This condition meets the prerequisites for the ME effect; i.e., the coexistence of broken spatial-inversion symmetry and timereversal symmetry. Often, these systems exhibit a nonpolar to polar structural transition at high temperatures and magnetic ordering at lower temperatures. A well-known example is BiFeO 3 , with ferroelectric and antiferromagnetic transition temperatures at 1100 K and 653 K, respectively [12]. However, its ME effect is small compared to those of spin-driven ME materials.Recently, a ME effect has been observed in the corundum-related compound Ni 3 TeO 6 (NTO). It crystallizes in a polar R3 space group with three Ni 2þ ions (3d 8 , S ¼ 1) and a nonmagnetic Te ion arranged along the c axis in a unit cell [ Fig. 1(a)] to form a linear chain with broken spatialinversion symmetry. This material is not ferroelectric but pyroelectric; i.e., the electric polarization cannot be switched by an external electric field. However, in addition to its nonswitchable electric polarization component due to the polar structure, it also shows a...

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Spin and Dipole Ordering in Ni₂InSbO₆ and Ni₂ScSbO₆ with Corundum-Related Structure

Cited by 46 publications

References 45 publications

Non-hysteretic colossal magnetoelectricity in a collinear antiferromagnet

Non-hysteretic colossal magnetoelectricity in a collinear antiferromagnet

Magnetostriction-polarization coupling in multiferroic Mn2MnWO6

Successive Magnetic-Field-Induced Transitions and Colossal Magnetoelectric Effect inNi3TeO6

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