Magnetic, magnetoelectric, magnetodielectric and magnetoresistance studies on CuO doped Sr2Bi4Ti5O18 lead free ferroelectric ceramics

Elayaperumal, E.; Krishnamoorthi, C.; Malathi, M.

doi:10.1016/j.jallcom.2015.08.059

Cited by 6 publications

(2 citation statements)

References 59 publications

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“…The enlarged view of major diffraction peak in the range 2h = 30°to 34°is shown in Fig. 1b, it can be observed from the diffraction pattern that a secondary phase was noticed in doped and undoped SBT 6 ceramics, whereas no such secondary phase was not observed for undoped SBT 5 ceramics [21]. As reported, secondary phase of SrTiO 3 (ICDD #89-4934) was observed at 2h = 32.46°(marked with #) in undoped SBT 6 ceramics and it increases upon increasing the doping concentration, the similar was observed in m = 5 layered ceramics [21][22][23].…”

Section: Powder X-ray Diffraction Studiesmentioning

confidence: 89%

“…1b, it can be observed from the diffraction pattern that a secondary phase was noticed in doped and undoped SBT 6 ceramics, whereas no such secondary phase was not observed for undoped SBT 5 ceramics [21]. As reported, secondary phase of SrTiO 3 (ICDD #89-4934) was observed at 2h = 32.46°(marked with #) in undoped SBT 6 ceramics and it increases upon increasing the doping concentration, the similar was observed in m = 5 layered ceramics [21][22][23]. The difference in enthalpy formation between Bi oxide layers is most difficult to stabilize a particular phase in the bulk form [3]…”

Section: Powder X-ray Diffraction Studiesmentioning

confidence: 90%

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Observation of room temperature multiferroicity in CuO-doped Sr3Bi4Ti6O21 lead-free ferroelectric ceramics

Elayaperumal

Malathi

Murugesan

et al. 2020

J Mater Sci: Mater Electron

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Room temperature multiferroicity was achieved in CuO-doped Sr 3 Bi 4 Ti 6 O 21 (SBT 6 ) lead-free bismuth layered structure ferroelectric ceramics. On addition of CuO, a feeble magnetization with highest saturation magnetization of * 3 memu/g and least coercivity of 676 Oe was obtained for x = 0.5 mol% sample. The effect of magnetic field on the ferroelectric properties was investigated, which reveals the presence of magnetoelectric (ME) coupling indirectly and the maximum remnant polarization of 12.16 lC/cm 2 at 1 kOe was obtained. Moreover, from direct measurements (ME studies), coupling between ferromagnetic and ferroelectric phases was also achieved at room temperature. Further, the presence of feeble ME effect decreases upon increasing CuO doping concentration, especially at higher doping concentration. The induced spontaneous magnetization, oxygen vacancies and strong magnetic superexchange interaction of CuO played a key role in achieving room temperature multiferroicity.

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