Ein neues Mangan(II)‐Oxowolframat: Mn<sub>3</sub>WO<sub>6</sub>

Klüver, E.; Müller‐Buschbaum, Hk.

doi:10.1002/zaac.19946200425

Cited by 7 publications

(8 citation statements)

References 11 publications

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“…The XRPD data (Figure a) recorded at room temperature are characteristic of the Mn 3 TeO 6 structure type (Figure ) as expected from ref . The structure refinement, performed with Fullprof software, in the R 3̅ space group (SG) leads to a = 8.8905(6) Å and c = 10.4734(8) Å, in agreement with the previous report and close to those of Mn 3 TeO 6 ( a = 8.8931 Å and c = 10.4782 Å). A table with the corresponding refined atomic positions and reliability factors is given in the Supporting Information.…”

Section: Resultssupporting

confidence: 89%

“…Until now, the only report dealing with the R 3̅ Mn 3 WO 6 polymorph was related to its crystal growth under normal pressure . Starting from a 1:1 ratio of MnCO 3 and WO 3 precursors, mixed and then pressed, the surface of the obtained pellet was heated under a H 2 atmosphere with a CO 2 laser to reach the melting point.…”

Section: Experimental Detailsmentioning

confidence: 99%

“…In all of these oxides, manganese is divalent (HS Mn 2+ ( S = 5/2)) and sits in MnO 6 octahedra. Considering that the inversion symmetry can be broken by the antiferromagnetic structure, the other form of Mn 3 WO 6, i.e., R 3̅-like Mn 3 TeO 6, which is stabilized without applying high pressure, is worth studying.…”

Section: Introductionmentioning

confidence: 99%

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Spin-Induced Multiferroic Behavior in Centrosymmetric Mn₃WO₆

et al. 2020

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The Mn 3 WO 6 oxide, prepared by a solid-state reaction at ambient pressure, is found to crystallize at room temperature in the centrosymmetric R3̅ trigonal structure of Mg 3 TeO 6 . By X-ray absorption spectroscopy (XAS) at the Mn-L 2,3 edges, a divalent oxidation state for manganese is established, consistent with W 6+ and O 2− , which fits with the value extracted from analyzing the paramagnetic regime. Interestingly, anomalies in dielectric and pyroelectric measurements can be observed concomitant with the antiferromagnetic transition at T N ≈ 25 K. The corresponding electrical polarization, P = ±15 μC m −2 below T N , can be inverted by opposite poling, which confirms that Mn 3 WO 6 is a spin-induced multiferroic (MF) material.

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Section: Resultssupporting

confidence: 89%

Section: Experimental Detailsmentioning

confidence: 99%

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Spin-Induced Multiferroic Behavior in Centrosymmetric Mn₃WO₆

et al. 2020

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“…1) 25 . The Mn 2 MnWO 6 polymorph we report here, prepared at 1673 K and 8 GPa (see Methods), forms in a different crystal structure.…”

Section: Resultsmentioning

confidence: 99%

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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“…The polarization of Mn 2 FeWO 6 is not switchable, due to a metallic intermediate state of the d -orbitals of Fe from first-principles calculations (Figure d); this prediction has not been experimentally confirmed yet. The polarization switching in Mn 2 MnWO 6 was first predicted by first-principles calculations and then confirmed by piezo-response force microscopy (PFM) measurements. ,, Magnetostriction-polarization coupling around the magnetic transition ordering temperature in Mn 2 MnWO 6 is evidenced by temperature-dependent PND analysis, SHG effect, and magnetic-field-dependent pyro-response behavior, which together with the magnetic-field-dependent polarization measurements qualitatively indicate magnetoelectric coupling. Thus, the multiferroic properties of Mn 2 FeWO 6 need further experimental validation, while Mn 2 MnWO 6 appears to be magnetoelectric.…”

Section: Structure Rulesmentioning

confidence: 99%

Polar Magnets in Double Corundum Oxides

Cai

Greenblatt

2017

Chem. Mater.

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Polar magnets are promising materials for multiferroic and magnetoelectric applications in spintronic devices, owing to the coexistence of electrical polarization and magnetization and hence magnetoelectric effect. However, the design and preparation of polar magnets is a challenge due to the incompatible requirements for ferroelectricity and ferromagnetism on chemical bonding and electronic configurations. Corundum derivatives can incorporate magnetic ions into all the octahedral metal sites to enhance magnetic interactions accompanied by large spontaneous polarization if polar polymorph structures are adopted, providing an ideal platform for polar-magnet design. Considering the variable cationic combinations in A 2 BB′O 6 -type double corundum derivatives, a large number of new polar magnets are anticipated. However, so far only 14 compounds in this family have been reported, including 11 experimentally prepared and 3 theoretically predicted. The crystal structure types and physical properties of these compounds are found to largely depend on the synthesis conditions, chemical−geometrical factors, electronic configurations of cations, and spin structures, or a combination of any of the above. Therefore, it is essential to review the crystallization and transforming rules of known polar magnets and guide further exploration of new multifunctional materials in double corundum derivatives.

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Ein neues Mangan(II)‐Oxowolframat: Mn₃WO₆

Cited by 7 publications

References 11 publications

Spin-Induced Multiferroic Behavior in Centrosymmetric Mn₃WO₆

Spin-Induced Multiferroic Behavior in Centrosymmetric Mn₃WO₆

Magnetostriction-polarization coupling in multiferroic Mn2MnWO6

Polar Magnets in Double Corundum Oxides

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Ein neues Mangan(II)‐Oxowolframat: Mn3WO6

Cited by 7 publications

References 11 publications

Spin-Induced Multiferroic Behavior in Centrosymmetric Mn3WO6

Spin-Induced Multiferroic Behavior in Centrosymmetric Mn3WO6

Magnetostriction-polarization coupling in multiferroic Mn2MnWO6

Polar Magnets in Double Corundum Oxides

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Ein neues Mangan(II)‐Oxowolframat: Mn₃WO₆

Spin-Induced Multiferroic Behavior in Centrosymmetric Mn₃WO₆

Spin-Induced Multiferroic Behavior in Centrosymmetric Mn₃WO₆