INFLUENCE OF Ho DOPING ON STRUCTURAL AND MAGNETIC BEHAVIOUR OF MULTIFERROIC BiFeO3 (CROSBI ID 684635)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Čebela, Maria ; Šenjug, Pavla ; Torić, Filip ; Skoko, Željko ; Zagorac, Dejan ; Pajić, Damir
engleski
INFLUENCE OF Ho DOPING ON STRUCTURAL AND MAGNETIC BEHAVIOUR OF MULTIFERROIC BiFeO3
Magnetoelectric multiferroics, showing simultaneous ferroelectricand ferromagnetic ordering, have aroused wide attention in recent years, because they offer a wide range of potential applications in data storage media, spintronics and multi-state memories. The influence of Ho doping on the crystal structure and magnetic properties of bismuth ferrite(BFO) nanopowders was investigated. BiFeO3 and Bi1-xHoxFeO3 ultrafine nanopowders were synthesized by the hydrothermalmethod. Here we use simple, low-cost and energy-saving hydrothermal method, which has advantages over the conventional methods. The diffraction pattern was recorded at room temperature and atmospheric pressure in the absence of any re-heating of the sample. A fitting refinement procedure using the Rietveld method was performed which showed the incorporation of Ho3+ ions in the BiFeO3 crystal lattice, where they substitute Bi3+ ions. All the samples belong to R3c space group. In addition, theoretical investigation using bond valence calculations have been performed in order to mimic pure and Ho doped BiFeO3 compounds produced in the experiment. Various BFO polymorphs were investigated as function of holmium concentration and final optimization of crystal structures has been performed on ab initio level using Density Functional Theory (DFT). Magnetic behaviour of synthesized materials was investigated by SQUID magnetometer in wide temperature interval (2–800 K). Splitting between the zero-field-cooled and field-cooled magnetization curves becomes more pronounced as the Ho concentration is increased, pointing to the development of weak ferromagnetic moment, which is usually connected with uncompensated spins or spin canting. Hysteresis loops show the same fact, attaining higher magnetization with more Ho included, and becoming wider, i.e.magnetically harder.
Bismuth ferrite ; Multiferoics ; Magnetoelectric effect
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Podaci o prilogu
108-108.
2019.
objavljeno
Podaci o matičnoj publikaciji
Programme and Book of Abstracts of The Fifth Conference of The Serbian Society for Ceramic Materilas
Podaci o skupu
5th Conference of the Serbian Society for Ceramic Materials
poster
11.06.2019-13.06.2019
Beograd, Srbija