Structural and magnetic studies on (x)PbTiO3 – (1 − x)SrFe12O19 composite multiferroics

Singh, Ajay; Singh, Vishal; Bamzai, K. K.

doi:10.1016/j.matchemphys.2015.02.004

Cited by 33 publications

(7 citation statements)

References 41 publications

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“…10 The observed value is well comparable to the other multiferroic composites [56]. Hence, the analysis of both direct and indirect way of magnetoelectric coupling studies suggests the presence of weak magnetoelectric coupling in all our samples.…”

Section: Magnetodielectric (Md) Studiessupporting

confidence: 75%

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

Elayaperumal

Krishnamoorthi

Malathi

2015

Journal of Alloys and Compounds

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Section: Magnetodielectric (Md) Studiessupporting

confidence: 75%

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

Elayaperumal

Krishnamoorthi

Malathi

2015

Journal of Alloys and Compounds

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“…(emu/g) -2 that confirms existence of large magnetoelectric coupling in Co 4 Ta 2 O 9 . 24 In Fig. 5 (a) we plot the temperature dependence of pyroelectric current for Co 4 Ta 2 O 9 when the compound was poled at different magnetic fields.…”

Section: (B) Shows the Magnetic Field Dependence Of Magnetocapacitanc...mentioning

confidence: 99%

Nature of magnetoelectric coupling in corundum antiferromagnet Co4Ta2O9

Chaudhary

Srivastava

Kaushik

et al. 2019

Journal of Magnetism and Magnetic Materials

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We study the magnetocapacitance (MC) effect and magnetoelectric (ME) coupling in spin-flop driven antiferromagnet Co 4 Ta 2 O 9 . The magnetocapacitance data at high magnetic fields are analyzed by phenomenological Ginzburg-landau theory of ferroelectromagnets and it is found that change in dielectric constant is proportional to the square of magnetization. The saturation polarization and magnetoelectric coupling are estimated to be 52µC/m 2 and γ = 1.4 x10 -3 (emu/g) -2 respectively at 6 Tesla. Electric polarization is achieved below Neel temperature only when the sample is cooled in the presence of magnetic field and it is established that the ground state is non-ferroelectric implying that magnetic lattice does not lead to spontaneous symmetry breaking in Co 4 Ta 2 O 9 .

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“…5 a Magnetic field dependent P-E curves of x = 0.5 mol% sample, b Plot of P r , P s and E c vs magnetic field for x = 0.5 mol% sample estimated [38] and highest value of v E = 0.1064 mVcm -1 Oe -1 was obtained for the same compound. The result indicates the presence of weak magnetoelectric effect in the CuO doped SBT 6 ceramics and also the values are comparable to the (x)PbTiO 3 -(1 -x)SrFe 12 O 19 composite multiferroics [39]. The magnetic field induced strain/stress mediated ME coupling between magnetic and electric phases leads to an electric field on the ferroelectric domain, which tunes the dielectric behavior of CuO modified SBT 6 ceramics.…”

Section: Magnetodielectric Studiesmentioning

confidence: 54%

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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Structural and magnetic studies on (x)PbTiO3 – (1 − x)SrFe12O19 composite multiferroics

Cited by 33 publications

References 41 publications

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

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

Nature of magnetoelectric coupling in corundum antiferromagnet Co4Ta2O9

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

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