The magnetic properties of Bi(Fe0.95Co0.05)O3 ceramics

Abstract

Articles you may be interested inEffect of Pr-and Nd-doping on structural, dielectric, and magnetic properties of multiferroic Bi0.8La0.2Fe0.9Mn0.1O3Structure and multiferroic properties of Bi(1-x)DyxFe0.90Mg0.05Ti0.05O3 solid solution Influence of A-site doping on structural properties of Bi0.95Pr0.05FeO3 multiferroics AIP Conf.Bi͑Fe 0.95 Co 0.05 ͒O 3 bulk ceramics were prepared by rapid sintering using sol-gel derived fine powders. Bi͑Fe 0.95 Co 0.05 ͒O 3 crystallized in a rhombohedrally distorted BiFeO 3 structure with compressive lattice distortion induced by the Co substitution at Fe sites from Raman study. Compared with BiFeO 3 prepared under similar conditions, the magnetic properties were significantly enhanced, with saturate magnetization of 1.6 emu/g and remnant magnetization of 0.7 emu/g at 300 K. Clear metamagnetism was observed in Bi͑Fe 0.95 Co 0.05 ͒O 3 . online͒ XRD patterns of BiFeO 3 and Bi͑Fe 0.95 Co 0.05 ͒O 3 , the diffraction peaks of Bi 12 ͑Bi 0.5 Fe 0.5 ͒O 19.5 are marked by stars.APPLIED PHYSICS LETTERS 95, 112510 ͑2009͒

Influence of Co doping on structural, optical and magnetic properties of BiFeO3 films deposited on quartz substrates by sol–gel method

“…Efforts have been paid to improve the magnetization of BiFeO 3 to get a great response to the application of magnetic field. Xu et al reported that Co substitution could enhance the magnetic properties of BiFeO 3 ceramics [9]. However, Co doping effects on magnetic properties of BiFeO 3 with sol-gel method remain as an open issue.…”

Preparation, structural and magnetic studies on BiFe1-xCrxO3 (x = 0.0, 0.05 and 0.1) multiferroic nanoparticles

“…14 Significant increase in magnetization has been found in BiFe 0.95 Co 0.05 O 3 bulk ceramics as compared to the case of pure BFO samples prepared by rapid sintering using solgel derived powders. 15 16 Decrease in the particle size resulting in significant increase in the magnetic properties, may be due to the suppression of the spin spiral structure of periodicity 62 nm. 17 The magnetic properties in these nanosized particles greatly depend on the morphology and experimental conditions and indirectly on the preparation methods.…”

Elucidating the real effect of Ba and Co doping on the magnetic and optical properties of BiFeO3

“…Other reports suggest that the use of transition metals in BiFeO 3 is beneficial to increase the ferromagnetic character [11]. Possible explanations for the increase in magnetization when doping with cobalt, are the super-exchange interaction between Fe 3+ and Co 3+ [12], the spin-glass behavior of BiFeO 3 [13], and an increase in spin canting due to lattice strain [14]. However, the direct effect of cobalt remains unclear due to lack of purity of materials reported in the literature.…”