Structure and magnetic properties of Y1−xLuxFeO3 (0 ≤ x ≤ 1) ceramics

Abstract

Polycrystalline Lu-doped YFeO3 samples with perovskite structure were synthesized by solid-state reaction. Powder X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray analysis manifest the high quality of the samples. Room temperature 57Fe Mössbauer spectra indicate that only the Fe3+ exists in the samples, which excludes the formation of multiple valence of Fe. The large effective magnetic moments of Fe3+ obtained from the temperature dependence of magnetization data can be explained in terms of the formation of ferromagnetic clusters. Field-dependent magnetization reveals that all the samples show weak ferromagnetic property due to the small canting of the Fe3+ moments. The field-induced spin-reorientation was detected on YFeO3 and was gradually suppressed by Lu3+ doping. Polarization hysteresis loops of Y1−xLuxFeO3 (0 ≤ x ≤ 1) were observed at room temperature. Our results suggest that the multiferroic properties may exist in the Y1−xLuxFeO3 (0 ≤ x ≤ 1) ceramics.

Multiferroic properties of Y-doped BiFeO3

“…The structural refinement has confirmed the space group of orthorhombic Eu-doped BiFeO 3 is Pn2 1 a [14], suggesting the space group of orthorhombic Bi 1.04Àx Y x FeO 3 should be Pn2 1 a. [19]. 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).…”

Multiferroic, Phonon and Optical Properties of Pure and Ion-Doped YFeO3 Nanoparticles

“…We have, again, a compressive strain which leads to an increase of J d between the Fe ions, in comparison to the undoped case J b , where J d > J b . The Fe-O-Fe superexchange interaction can affect the magnetization of Er-doped YFO [13]. This leads to an enhancing of M s (see Figure 4, curve 2), which is in a good qualitative concordance with the results of Cheng et al [11].…”

“…The doping of YFO with different ions-magnetic or nonmagnetic-can improve its magnetic, electric and dielectric properties. Many authors have studied the changes in the properties of YFO which occur though the substitution of different ions on Y-, Fe-or both sites in YFO bulk and nanoparticles [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. The doping ions have different ionic radii in comparison with the host ions, which leads to strains and to modification of the properties after ion doping.…”

Enhanced magnetic and dielectric properties of Ti‐doped YFeO3 ceramics

“…The literature reports have shown several instances where the dielectric and magnetic properties of YFO ceramic could be improved by doping with suitable ions . Donor dopant Ti 4+ at Fe 3+ introduces polarizable nature and can modify the magnetic as well as the dielectric properties.…”

“…5 The literature reports have shown several instances where the dielectric and magnetic properties of YFO ceramic could be improved by doping with suitable ions. [10][11][12] Donor dopant Ti 4+ at Fe 3+ introduces polarizable nature and can modify the magnetic as well as the dielectric properties. Here, we chose the donor dopant Ti 4+ at Fe 3+ site in YFO and attempted to study its influence on the electrical and magnetic properties of YFO ceramics.…”