TY - JOUR
T1 - Enhanced multiferroic properties of YFeO3 by doping with Bi3+
AU - Rosales-González, Omar
AU - Jesús, Félix Sánchez De
AU - Pedro-García, Fernando
AU - Cortés-Escobedo, Claudia Alicia
AU - Ramírez-Cardona, Màrius
AU - Bolarín-Miró, Ana María
N1 - Publisher Copyright:
© 2019 by the authors.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - Tthe present work studied the cationic substitution of Y3+ by BiY3+ on the crystal structure of orthorhombic YFeO3 and its effect over magnetic, dielectric and electric properties of multiferroic yttrium orthoferrite. Stoichiometric mixtures of Y2O3, Fe2O3 and Bi2O3 were mixed and milled for 5 h using a ball to powder weight ratio of 10:1 by high-energy ball milling. The obtained powders were pressed at 1500 MPa and sintered at 700 °C for 2 h. The test samples were characterized at room temperature by X-ray diffraction (XRD), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and impedance spectroscopy (IS). The X-ray diffraction patterns disclosed a maximum solubility of 30 % mol. of Bi3+ into the orthorhombic YFeO3. For higher concentrations, a transformation from orthorhombic to garnet structure was produced, obtaining partially Y3Fe5O12 phase. The substitution of Bi3+ in Y3+ sites promoted a distortion into the orthorhombic structure and modified Fe-O-Fe angles and octahedral tilt. In addition, it promoted a ferromagnetic (FM) order, which was attributed to both the crystal distortion and Dzyaloshinskii-Moriya interaction. For doped samples, an increase in real permittivity values was observed, and reduced with the increase of frequency. This in good agreement with the Maxwell-Wagner effect.
AB - Tthe present work studied the cationic substitution of Y3+ by BiY3+ on the crystal structure of orthorhombic YFeO3 and its effect over magnetic, dielectric and electric properties of multiferroic yttrium orthoferrite. Stoichiometric mixtures of Y2O3, Fe2O3 and Bi2O3 were mixed and milled for 5 h using a ball to powder weight ratio of 10:1 by high-energy ball milling. The obtained powders were pressed at 1500 MPa and sintered at 700 °C for 2 h. The test samples were characterized at room temperature by X-ray diffraction (XRD), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and impedance spectroscopy (IS). The X-ray diffraction patterns disclosed a maximum solubility of 30 % mol. of Bi3+ into the orthorhombic YFeO3. For higher concentrations, a transformation from orthorhombic to garnet structure was produced, obtaining partially Y3Fe5O12 phase. The substitution of Bi3+ in Y3+ sites promoted a distortion into the orthorhombic structure and modified Fe-O-Fe angles and octahedral tilt. In addition, it promoted a ferromagnetic (FM) order, which was attributed to both the crystal distortion and Dzyaloshinskii-Moriya interaction. For doped samples, an increase in real permittivity values was observed, and reduced with the increase of frequency. This in good agreement with the Maxwell-Wagner effect.
KW - Bismuth doped YFeO
KW - Dielectric
KW - Ferromagnetic
KW - High-energy ball milling
KW - Multiferroic
KW - YFeO
UR - http://www.scopus.com/inward/record.url?scp=85068795303&partnerID=8YFLogxK
U2 - 10.3390/ma12132054
DO - 10.3390/ma12132054
M3 - Artículo
C2 - 31247978
SN - 1996-1944
VL - 12
JO - Materials
JF - Materials
IS - 13
M1 - 2054
ER -