Magnetic and thermal properties of perovskite YFeO3 single crystals

Shen, Hui; Xu, Jing; Wu, Anhua; Jian-Gao, Zhao; Shi, M.

doi:10.1016/j.mseb.2008.12.020

Cited by 74 publications

(40 citation statements)

References 17 publications

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“…YFeO 3 is a canted antiferromagnet with weak saturate magnetization of about 0.18 emu/g, which is smaller than that of Bi 0.74 Y 0.30-FeO 3 (0.31 emu/g). Furthermore, the coercivity of YFeO 3 (970 Oe) is much larger than that of Bi 0.74 Y 0.30 FeO 3 (150 Oe) [20]. Thus the possible contribution from the impurity phase of YFeO 3 can be excluded, and the sudden improvement of the ferromagnetism in The ferroelectric hysteresis loops (P-E) of Bi 1.04Àx Y x FeO 3 are shown in Fig.…”

Section: Resultsmentioning

confidence: 96%

Multiferroic properties of Y-doped BiFeO3

Luo

Wei

Yuan

et al. 2012

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 96%

Multiferroic properties of Y-doped BiFeO3

Luo

Wei

Yuan

et al. 2012

Journal of Alloys and Compounds

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“…For the photocatalytic degradation of rhodamine B with YFeO 3 under visible light, Chen et al identified photo-generated holes and hydroxyl radicals as the main active species [15]. However, since the detailed mechanism of the photocatalytic process can vary for different pollutants, further tests were performed in order to identify the reactive species in case of MO degradation.…”

Section: Photocatalytic Activity Of Hexagonal Yfeomentioning

confidence: 99%

Synthesis of Phase Pure Hexagonal YFeO3 Perovskite as Efficient Visible Light Active Photocatalyst

et al. 2017

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Hexagonal perovskite YFeO 3 was synthesized by a complex-assisted sol-gel technique allowing crystallization at calcination temperatures below 700 • C. As determined by diffuse reflectance spectroscopy (DRS) and Tauc plots, the hexagonal YFeO 3 exhibits a lower optical band gap (1.81 eV) than the orthorhombic structure (about 2.1 eV or even higher) being typically obtained at elevated temperatures (>700 • C), and thus enables higher visible light photocatalysis activity. Structure and morphology of the synthesized YFeO 3 perovskites were analyzed by powder X-ray diffraction (XRD) and nitrogen adsorption, proving that significantly smaller crystallite sizes and higher surface areas are obtained for YFeO 3 with a hexagonal phase. The photocatalytic activity of the different YFeO 3 phases was deduced via the degradation of the model pollutants methyl orange and 4-chlorophenol. Experiments under illumination with light of different wavelengths, in the presence of different trapping elements, as well as photoelectrochemical tests allow conclusions regarding band positions of YFeO 3 and the photocatalytic degradation mechanism. X-ray photoelectron spectroscopy indicates that a very thin layer of Y 2 O 3 might support the photocatalysis by improving the separation of photogenerated charge carriers.

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“…By predicting some new materials, we demonstrate this approach of exploring novel functional materials. For example, if the FE could be recovered in orthogonal RFeO 3 (R ¼ Y, Gd, Tb Dy, Ho, Er, Tm, Yb, Lu) [36][37][38] by this approach, the synthesis of a new family of room temperature multiferroic materials could be achieved. Furthermore, the result of our current work indicates that, through an interface design mechanism, short-period superlattices can have stronger FE than longer ones.…”

Section: Discussionmentioning

confidence: 99%

When One Plus One is More than Two

Junquera

2016

Physics

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In ABO 3 perovskites, oxygen octahedron rotations are common structural distortions that can promote large ferroelectricity in BiFeO 3 with an R3c structure [1] but suppress ferroelectricity in CaTiO 3 with a Pbnm symmetry [2]. For many CaTiO 3 -like perovskites, the BiFeO 3 structure is a metastable phase. Here, we report the stabilization of the highly polar BiFeO 3 -like phase of CaTiO 3 in a BaTiO 3 =CaTiO 3 superlattice grown on a SrTiO 3 substrate. The stabilization is realized by a reconstruction of oxygen octahedron rotations at the interface from the pattern of nonpolar bulk CaTiO 3 to a different pattern that is characteristic of a BiFeO 3 phase. The reconstruction is interpreted through a combination of amplitude-contrast sub-0.1-nm high-resolution transmission electron microscopy and first-principles theories of the structure, energetics, and polarization of the superlattice and its constituents. We further predict a number of new artificial ferroelectric materials demonstrating that nonpolar perovskites can be turned into ferroelectrics via this interface mechanism. Therefore, a large number of perovskites with the CaTiO 3 structure type, which include many magnetic representatives, are now good candidates as novel highly polar multiferroic materials [3].

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Magnetic and thermal properties of perovskite YFeO3 single crystals

Cited by 74 publications

References 17 publications

Multiferroic properties of Y-doped BiFeO3

Multiferroic properties of Y-doped BiFeO3

Synthesis of Phase Pure Hexagonal YFeO3 Perovskite as Efficient Visible Light Active Photocatalyst

When One Plus One is More than Two

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