Magnetic Structure and Ordering of Multiferroic Hexagonal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>LuFeO</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Disseler, Steven M.; Borchers, J. A.; Brooks, Charles M.; Mundy, Julia A.; Moyer, Jarrett A.; Hillsberry, Daniel; Thies, Eric L.; Ténné, D. A.; Heron, John T.; Holtz, Megan E.; Clarkson, James D.; Stiehl, Gregory M.; Schiffer, P.; Muller, David A.; Schlom, D. G.; Ratcliff, William

doi:10.1103/physrevlett.114.217602

Cited by 102 publications

(62 citation statements)

References 22 publications

(30 reference statements)

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“…Both a and c lattice parameters are found to vary linearly as a function of x Mn as shown in Fig. 1(b), smoothly interpolating between those of pure LuMnO 3 [8,[21][22][23] and epitaxially grown h-LuFeO 3 thin films [15,16] Fig. 2(b)], where a similar bifurcation is observed, indicating weak or canted ferromagnetism along the c axis as is found in pure h-LuFeO 3 films.…”

Section: A Lufe 1−x Mn X Omentioning

confidence: 61%

“…Recent ab initio calculations [12] have suggested that the closely related family of hexagonal ferrites such as LuFeO 3 (h-LFO) may exhibit greatly enhanced magnetic properties relative to their manganite counterparts due to enhanced exchange interactions, larger localized magnetic moments, and differences in the local electronic anisotropy between Mn 3+ and Fe 3+ . In fact, recent investigations of thin films of h-LFO demonstrate that magnetic order occurs as high as 150 K with the simultaneous appearance of a net ferromagnetic (FM) moment parallel to the ferroelectric axis [13][14][15][16] consistent with ab initio calculations [12]. To date, studies of this material have been limited to thin films as h-LuFeO 3 is metastable in bulk and instead forms the centrosymmetric and nonpolar orthorhombic Pbnm structure, precluding ferroelectricity [17].…”

Section: Introductionmentioning

confidence: 99%

“…This includes the highest T N observed to date for this class of materials (172 K), and the appearance of weak ferromagnetism consistent with thin-film studies. Furthermore, we are able to construct a phase diagram [8,[19][20][21][22][23] and epitaxially grown h-LuFeO 3 thin films [15,16] following Vergard's law. (c)-(e) Potential magnetic structures of h-LFO.…”

Section: Introductionmentioning

confidence: 99%

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Multiferroicity in doped hexagonalLuFeO3

et al. 2015

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The hexagonal phase of LuFeO 3 is a rare example of a multiferroic material possessing a weak ferromagnetic moment, which is predicted to be switchable by an electric field. We stabilize this structure in bulk form though Mn and Sc doping, and determine the complete magnetic and crystallographic structures using neutron-scattering and magnetometry techniques. The ferroelectric P 6 3 cm space group is found to be stable over a wide concentration range, ordering antiferromagnetically with Néel temperatures that smoothly increase following the ratio of c to a (c/a) lattice parameters up to 172 K, the highest found in this class of materials to date. The magnetic structure for a range of temperatures and dopings is consistent with recent studies of high quality epitaxial films of pure hexagonal LuFeO 3 including a ferromagnetic moment parallel to the ferroelectric axis. We propose a mechanism by which room-temperature multiferroicity could be achieved in this class of materials.

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Section: A Lufe 1−x Mn X Omentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multiferroicity in doped hexagonalLuFeO3

et al. 2015

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“…In a recent study on hLuFeO 3 , strong exchange coupling leading to high magnetic transition temperatures and spin re-orientation transitions closely connected with structural distortions have been identified [16]. Thin films of hLuFeO 3 have shown evidence for a room temperature multiferroic [17] and has been identified as a strong candidate for linear magnetoelectric coupling and control of the ferromagnetic moment directly by an electric field [18]. However, bulk LuFeO 3 normally crystallizes in orthorhombic P bnm symmetry thereby precluding the possibility of ferroelectricity.…”

Section: Pacs Numbersmentioning

confidence: 99%

Spin-lattice coupling and frustrated magnetism in Fe-doped hexagonal LuMnO ₃

Nair¹,

Fu²,

Kumar³

et al. 2015

EPL

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Strong spin-lattice coupling and prominent frustration effects observed in the 50% Fe-doped frustrated hexagonal (h)LuMnO3 are reported. A Néel transition at TN ≈ 112 K and a possible spin re-orientation transition at TSR ≈ 55 K are observed in the magnetization data. From neutron powder diffraction data, the nuclear structure at and below 300 K was refined in polar P 63cm space group. While the magnetic structure of LuMnO3 belongs to the Γ4 (P 6 3 c m) representation, that of LuFe0.5Mn0.5O3 belongs to Γ1 (P 63cm) which is supported by the strong intensity for the (100) reflection and also judging by the presence of spin-lattice coupling. The refined atomic positions for Lu and Mn/Fe indicate significant atomic displacements at TN and TSR which confirms strong spin-lattice coupling. Our results complement the discovery of room temperature multiferroicity in thin films of hLuFeO3 and would give impetus to study LuFe1−xMnxO3 systems as potential multiferroics where electric polarization is linked to giant atomic displacements.

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“…Hexagonal LuFeO 3 (h-LuFeO 3 ) is a multiferroic material that exhibits spontaneous electric and magnetic polarizations simultaneously. [1][2][3][4][5] It has been predicted that the magnetic dipole moment in h-LuFeO 3 can be switched by an electric field, 6 which is appealing for application in energy efficient information storage and processing. [7][8][9] Rather than h-LuFeO 3 , the orthorhombic crystallographic structure (o-LuFeO 3 ) is the thermodynamically stable bulk structure of LuFeO 3 with standard conditions, 10 meaning that the free energy of o-LuFeO 3 is lower than that of the h-LuFeO 3 .…”

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confidence: 99%

Phase separation in LuFeO3 films

Cao

Zhang

Sinha

et al. 2016

Applied Physics Letters

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The structural transition at about 1000 {\deg}C, from the hexagonal to the orthorhombic phase of LuFeO3, has been investigated in thin films of LuFeO3. Separation of the two structural phases of LuFeO3 occurs on a length scale of micrometer, as visualized in real space using X-ray photoemission electron microscopy (X-PEEM). The results are consistent with X-ray diffraction and atomic force microscopy obtained from LuFeO3 thin films undergoing the irreversible structural transition from the hexagonal to the orthorhombic phase of LuFeO3, at elevated temperatures. The sharp phase boundaries between the structural phases are observed to align with the crystal planes of the hexagonal LuFeO3 phase. The coexistence of different structural domains indicates that the irreversible structural transition, from the hexagonal to the orthorhombic phase in LuFeO3, is a first order transition, for epitaxial hexagonal LuFeO3 films grown on Al2O3

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Magnetic Structure and Ordering of Multiferroic HexagonalLuFeO3

Cited by 102 publications

References 22 publications

Multiferroicity in doped hexagonalLuFeO3

Multiferroicity in doped hexagonalLuFeO3

Spin-lattice coupling and frustrated magnetism in Fe-doped hexagonal LuMnO ₃

Phase separation in LuFeO3 films

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Magnetic Structure and Ordering of Multiferroic HexagonalLuFeO3

Cited by 102 publications

References 22 publications

Multiferroicity in doped hexagonalLuFeO3

Multiferroicity in doped hexagonalLuFeO3

Spin-lattice coupling and frustrated magnetism in Fe-doped hexagonal LuMnO 3

Phase separation in LuFeO3 films

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Product

Resources

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Spin-lattice coupling and frustrated magnetism in Fe-doped hexagonal LuMnO ₃