Study of electrical and magnetic properties of Pr 0.6−x Bi x Sr 0.4 MnO 3 (x=0.20 and 0.25)

Daivajna, Mamatha D.; Rao, Ashok; Lin, Wan-Jung; Kuo, Y. K.

doi:10.1016/j.physb.2017.03.033

Cited by 11 publications

(12 citation statements)

References 31 publications

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“…Values of T C , θ p , eff , M 90 kOe , H C , M 0 , M sat , critical fields (H CR ), and other calculated microstructural parameters for LB3SMO-Bi 0.3 Sr 0.3 MnO 3 , represents an intermediate system, as if it were a mixture of both the parent phases, showing signatures of magnetic phase coexistence. Similar characteristic of magnetic phase coexistence across intermediate concentration of Bi 3+ has been previously observed in case of La 0.67−x Bi x Sr 0.33 MnO 3 , La 0.7−x Bi x Ca 0.3 MnO 3 , Pr 0.6−x Bi x Sr 0.4 MnO 3 etc [29][30][31][32][33][34]…”

supporting

confidence: 74%

“…Recent literatures on Bi 3+ substituted perovskite system (i.e., LaSrMnO 3 [29,30], LaCaMnO 3 [31,32], PrSrMnO 3 [33,34], LaBaMnO 3 [35], and LaAgMnO 3 [36,37]) reveal an overall reduction T C and net magnetization for partial Bi 3+ content. However, as Bi 3+ concentration increases, a change in magnetic ground state has been noticed for LaSrMnO 3 [29,38], LaCaMnO 3 [31,32], and PrSrMnO 3 [34]. Whereas in case of Bi 3+ substituted NdCaMnO 3 [39] and NdSrMnO 3 [40], an interplay between charge ordering and antiferromagnetism has been observed.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Particle Size on Magnetic Phase Coexistence in Nanocrystalline La0.4Bi0.3Sr0.3MnO3

Souza

Rayaprol

Murari

et al. 2021

J Supercond Nov Magn

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Magnetic phase coexistence in the substituted perovskite compound, La0.4Bi0.3Sr0.3MnO3, is attributed to the spontaneous moment and a step-like metamagnetic transition observed in the magnetization measurements in its magnetically order state. The magnetism of samples reduced to nanometer sizes by the “top down” approach exhibits interesting changes with respect to the bulk, thus giving a handle in influencing the physical properties by reducing the particle size. The bulk sample orders ferromagnetically at TC = 295 K, whereas in nano-sized samples with particle sizes in the range of 21–30 nm, even though TC does not change, the transitions are suppressed. The nano-sized powder samples show a broad hump in the plot of magnetic susceptibility, signifying the possible disordered antiferromagnetic state. A systematic decrease in the magnitude of magnetization in nano-sized samples shows that the reduction in magnetic interaction could be attributed to the formation of a magnetic dead layer around the magnetic core.

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supporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Effect of Particle Size on Magnetic Phase Coexistence in Nanocrystalline La0.4Bi0.3Sr0.3MnO3

Souza

Rayaprol

Murari

et al. 2021

J Supercond Nov Magn

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“…Perovskite-type RE 1-x AE x MnO 3 , with RE representing a rare earth and AE an alkaline earth ion (AE = Ca, Ba, Sr and Pb), has attracted great scientific interest because of its peculiar physical properties and potential technological applications such as magnetic recording, magnetic heating and switch control in hyperthermia treatment, refrigerating materials, and as a cathode in solid oxide fuel cells (SOFCs) [1][2][3][4][5][6] . Its fundamental properties show a strong correlation between crystal structure and chemical composition, and it displays features such as electronic transport and magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of Pellet Compaction Pressure on the Physical Properties of La0.7Ba0.3MnO3 Manganite

et al. 2017

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Perovskite manganite La 0.7 Ba 0.3 MnO 3 , synthesized by ionic coordination reaction method (ICR) was compacted into pellets under different compaction pressures (P c ) and sintered at a temperature of 1150°C for 10h under a flow of O 2 . X-ray diffraction (XRD) data reveal that the samples can present simultaneously two phases -a rhombohedral structure with space group R3c and an orthorhombic structure with space group Pnma. Scanning electron microscopy (SEM) images show that, for this sintering temperature, the particle size and shape can be modified depending on the compaction pressure (P c ). Magnetization measurements show that the saturation magnetization and Curie temperature increase with P c . The enhancement of the ferromagnetic properties of perovskite manganites La 0.7 Ba 0.3 MnO 3 as a function of the compaction pressure is explained by an increase in the rhombohedral/orthorhombic structure ratio caused by this effect.

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“…Bi 0.6 Sr 0.4 MnO 3 (BSMO), the compound shows a PM-to-AFM transition at T N = 150 K and CO transition at T CO ≈ 600 K [31,33]. Previous reports on Bi 3+ -doped LaSrMnO 3 [34,35], LaCaMnO 3 [36,37], PrSrMnO 3 [38,39] demonstrate a transition in the magnetic ground state from FM metallic to AFM insulating with competitive coexistence of FM and AFM clusters for intermediate concentration of Bi 3+ [34][35][36][37][38][39]. Across the phase coexistence, the material exhibits a large MR (≈100%) and MCE probably due to the melting of the CO state.…”

Section: Introductionmentioning

confidence: 93%

“…Across the phase coexistence, the material exhibits a large MR (≈100%) and MCE probably due to the melting of the CO state. In the partial doping concentration of Bi 3+ , the system shows predominantly FM features with a systematic drop in T C and net magnetization [34][35][36][37][38][39]. However, in the case of NdSrMnO 3 [40], NdCaMnO 3 [41], Bi 3+ doping drives the system to be robust CO.…”

Section: Introductionmentioning

confidence: 99%

Finite-size effects on the evolution of magnetic correlations and magnetocaloric properties of Pr0.4Bi0.2Sr0.4MnO3

2021

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The effect of particle size reduction on the magnetic correlations of Pr0.4Bi0.2Sr0.4MnO3 nanoparticles prepared by top-down approach has been studied in detail. It was observed that as the milling time increases from 0 to 240 min, particle size decreases from 160 to 12 nm. Correspondingly it was observed that the ferromagnetic transition temperature (TC) drops (264 to 213 K) and saturation magnetization (MS) decreases (2.12–0.41 $${\upmu }_{\mathrm{B}}/\mathrm{f}.\mathrm{u}.$$ μ B / f . u . ) while coercivity (HC) shows a monotonous increase (0.18–1.5 kOe) as the particle size decreases due to increase in milling. The magnetic entropy change (ΔS) also decreases (2.41–0.24 J/kg-K) as particle size decreases indicating a strong correlation between magnetism and particle size. The metamagnetic M–H response of the bulk sample, which signifies the magnetic phase coexistence, is suppressed, and the nature of magnetic interactions demonstrates a transition from long range to short range. The observed characteristics emphasizes that with particle size reduction there is an increase in the surface disorder which can be explained by considering the core–shell model for the nanoparticles. Graphic abstract

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Study of electrical and magnetic properties of Pr 0.6−x Bi x Sr 0.4 MnO 3 (x=0.20 and 0.25)

Cited by 11 publications

References 31 publications

Effect of Particle Size on Magnetic Phase Coexistence in Nanocrystalline La0.4Bi0.3Sr0.3MnO3

Effect of Particle Size on Magnetic Phase Coexistence in Nanocrystalline La0.4Bi0.3Sr0.3MnO3

Influence of Pellet Compaction Pressure on the Physical Properties of La0.7Ba0.3MnO3 Manganite

Finite-size effects on the evolution of magnetic correlations and magnetocaloric properties of Pr0.4Bi0.2Sr0.4MnO3

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