Magnetic entropy-change in La0.67−xBixCa0.33MnO3 compound

Atalay, S.; Kolat, V. S.; Gencer, H.; Adiguzel, H.I.

doi:10.1016/j.jmmm.2006.02.082

Cited by 32 publications

(22 citation statements)

References 13 publications

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“…1): However, compared with Gd [14] or other rare earth elements [15][16][17][18] and their compounds, the manganese oxide materials as well as the present system are the cheapest, the easiest to synthesize and they have a higher chemical stability. These features make the present system as well as some other manganites a competitive material for active magnetic refrigeration application.…”

Section: Resultsmentioning

confidence: 99%

Magnetocaloric Effect in Perovskite Manganite La0.67−x Eu x Sr0.33MnO3

Dhahri

Abassi

Hlil

et al. 2015

J Supercond Nov Magn

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In this paper, the magnetocaloric effect of perovskite manganite La 0.67−x Eu x Sr 0.33 MnO 3 (x = 0.1 and x = 0.2) has been investigated. From the measurement of isothermal magnetization around the Curie temperature, we have calculated the maximum isothermal magnetic entropy change The maximum magnetic entropy change S max M is found to increase with increasing of Eu content from 4.10 J/kg K for x = 0.1 J/kg K and 4.33 J/kg K for x = 0.2 upon 5 T applied field change. It is suggested that La 0.67−x Eu x Sr 0.33 MnO 3 are suitable candidates as refrigerants near room temperature region.

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Section: Resultsmentioning

confidence: 99%

Magnetocaloric Effect in Perovskite Manganite La0.67−x Eu x Sr0.33MnO3

Dhahri

Abassi

Hlil

et al. 2015

J Supercond Nov Magn

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“…The decrease in the unit-cell volume for these samples compared to La 0.67 Ca 0. 33 13,15,18 From the refinement the estimated atomic positions for the samples are listed in Table I. Microstructure of the samples Fig.…”

Section: A Structure and Morphology Studiesmentioning

confidence: 99%

“…9 The disorder induced second-order FM-PM phase transition is reported in the literature. [12][13][14] There are reports on the effect of Bi 11,[15][16][17][18][19][20][21] and Sm 13,[22][23][24] doping at La-site in La-manganites. M. C. Walsh et al 11 have investigated magnetic and electronic properties of La 0.67−x Bi x Ca 0.33 MnO 3 (x ≤ 0.16).…”

Section: Introductionmentioning

confidence: 99%

Disorder-driven phase transition in La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites

Ade

Singh

2015

AIP Advances

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In the present work we report the structural, electron spin resonance (ESR) and magnetic properties of La0.37D0.30Ca0.33MnO3 (D = Bi, Sm) manganites synthesized by sol-gel method. The critical behavior at the critical point, where the system undergoes phase transition from paramagnetic (PM) to ferromagnetic (FM) state, is investigated by using modified-Arrott plots, Kouvel-Fisher method and critical isotherm analysis. Both the samples show second-order phase transition near the critical point. The decrease in magnetization (M), Curie temperature (TC), evolution of spin or cluster glass behavior and the nature of second-order phase transition compared to the first-order transition reported in the literature for La0.67Ca0.33MnO3 are ascribed to disorder caused by the size mismatch of the A-site cations with Bi and Sm doping at La-site.

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“…Nowadays, nearly all the studies on the magnetocaloric effect (MCE) and magnetic cooling have focused on the search for the most suitable magnetic materials, which are those with the largest magnetocaloric effects. Up to now, many magnetic amorphous and crystalline materials have been suggested as potential candidates for use in magnetic refrigeration technology near room temperature [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%