Enhanced multiferroic properties in La and Ce co-doped BiFeO3 nanoparticles

Priyadharsini, P.; Pradeep, A. M.; Sathyamoorthy, B.; Chandrasekaran, G.

doi:10.1016/j.jpcs.2014.03.001

Cited by 57 publications

(12 citation statements)

References 38 publications

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“…Similar improvement of magnetic properties had been reported earlier for doped BFO system. 12,[28][29][30] The magnetization at the highest field applied 3T (H ¼ 3T) increase from 0.12 emu/g for the undoped system to 0.37 emu/g and 0.56 emu/g for the BBFT-900 and the BBLFT-900, respectively. The remnant magnetization r is similar and around 0.09 emu/g for doped samples, while the coercive field iHc decrease with dopant incorporation from 2270 Oe for BBFT-900 to 850 Oe for BBLFT-900.…”

Section: Resultsmentioning

confidence: 99%

BiFeO₃ codoping with Ba, La and Ti: Magnetic and structural studies

et al. 2015

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Conventional solid state reaction method, from oxides and carbonates, was employed to prepare bismuth (Bi)-based multiferroic systems. The undoped BiFeO3 (BFO) and the codoped system with Ba, La and Ti (Bi[Formula: see text]BaxFe[Formula: see text]TiyO3, Bi[Formula: see text]BaxLazFe[Formula: see text]TiyO3) with x,y,[Formula: see text] were prepared stoichiometrically and sintered at two different temperatures. The structural and magnetic properties were investigated at room temperature. XRD measurements confirm the obtaining of the rhombohedral perovskite structure of the BFO family system. For the undoped system, some reflections of undesired phases are present for two different sintering temperatures, while for the doped system only one phase is present for both temperatures. The magnetic characterization at room temperature revealed remarkable differences between the ceramic samples. The results show that for undoped BFO system, spontaneous magnetization is not observed at room temperature. Nevertheless, in doped one, a well-defined ferromagnetic behavior is observed at room temperature, possible, due to the suppression of the spatially modulated spin structure of BFO promoted by the reduction of the rhombohedral distortion and the weakening of the Bi–O bonds. The XPS results confirm the presence of oxygen vacancies and the coexistence of Fe[Formula: see text] and Fe[Formula: see text] in all the studied samples. Calorimetric measurements reveal that the dopant incorporation has not a direct effect in Néel temperature but possibly yes in ferroelectric-paraelectric transition.

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Section: Resultsmentioning

confidence: 99%

BiFeO₃ codoping with Ba, La and Ti: Magnetic and structural studies

et al. 2015

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“…Although a relatively large number of multiferroic materials have been discovered and studied in recent years 3,4,5 , there remains a number of open questions concerning the origin of the magnetoelectric coupling, particularly in systems exhibiting a magnetically-induced ferroelectric polarization. In order to elucidate the microscopic origins of the magnetoelectric coupling in these systems, there have been a number of investigations on the response of various multiferroic materials under different types of perturbations 6,7,8,9 . Within this broad field of study, chemical doping has been used effectively as a tool to study how the structural, magnetic, and electrical properties of multiferroics are affected by small changes in composition 10,11,12 .…”

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confidence: 99%

Effect of transition metal doping on multiferroic ordering inFeVO4

et al. 2015

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“…It is observed that it is difficult to assign exact phonon modes for pure BFO and substituted BFO [27,51,52]. The observed spectra and the phonon modes of polycrystalline BFO and substituted BFO were different [51,[53][54][55][56][57], because of the angular dispersion, which causes complexity behaviour in the polycrystalline samples because of the random orientation of grains.…”

Section: Ftir and Raman Studymentioning

confidence: 99%