Size control on the magnetism of La0.7Sr0.3MnO3

Souza, Anita D.; Babu, P. D.; Rayaprol, Sudhindra; Murari, M.S.; Mendonca, Lozil Denzil; Daivajna, Mamatha D.

doi:10.1016/j.jallcom.2019.05.004

Cited by 31 publications

(28 citation statements)

References 48 publications

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“…As shown in Figure 3, at the ambient pressure, T c of LSMO is 362 K, close to the value reported in literatures 61,64 . T c increases rapidly to 365 K with the increase in pressure P and the pressure coefficient d T c /d P = 8.82 K/GPa, as P ≤ .34 GPa.…”

Section: Resultssupporting

confidence: 89%

“…Figure 1 shows the XRD pattern of LSMO. Through the analysis of XRD data by Rietveld software, it can be seen that LSMO is a single‐phase perovskite structure, and has a rhombohedral symmetry with the space group

R \bar{3} c

, and the lattice parameter of the pure LSMO are a = b = 5.5073 (1) Å and c = 13.3626 (8) Å, close to the results reported in literatures 60,61 . No impurity phase is observed.…”

Section: Resultssupporting

confidence: 81%

“…Through the analysis of XRD data by Rietveld software, it can be seen that LSMO is a single-phase perovskite structure, and has a rhombohedral symmetry with the space group R3c, and the lattice parameter of the pure LSMO are a = b = 5.5073 (1) Å and c = 13.3626 (8) Å, close to the results reported in literatures. 60,61 No impurity phase is observed. and M FC show a small bending at a temperature T k in the ferromagnetic region below T c ; T k is defined as the temperature corresponding the peak of the dM ZFC /dT and dM FC /dT, as shown in insets of Figure 2.…”

Section: Characterizationmentioning

confidence: 96%

“…As shown in Figure 3, at the ambient pressure, T c of LSMO is 362 K, close to the value reported in literatures. 61,64 T c increases rapidly to 365 K with the increase in pressure P and the pressure coefficient dT c /dP = 8.82 K/GPa, as P ≤ .34 GPa. As P continues to increase, T c increases slowly; At P = .74 GPa, T c is 366 K, and the average pressure coefficient of T c at this pressure is dT c /dP = 5.40 K/GPa, very close to the previously reported value of dT c /dP = 5.30 K/ GPa (P = 0~1 GPa).…”

Section: Characterizationmentioning

confidence: 97%

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Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field

et al. 2020

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Polycrystalline La 0.7 Sr 0.3 MnO 3 sample (LSMO) was synthesized by the solid phase reaction; it exhibits the paramagnetic-ferromagnetic transition at T c = 362 K at the ambient pressure; it is paramagnetic metallic state above T c and the ferromagnetic metallic state below T c. It was observed that the pressure effect depends on the temperature range: (a) In the paramagnetic region, the magnetization M hardly changes with the pressure P, that is, ΔM≈0. There exist the antiferromagnetic (AFM) coupled ferromagnetic clusters in the paramagnetic region, and the pressure enhances the AFM coupling. (b) In the temperature range around T c , the pressure increases M, that is, ΔM > 0, with the concomitant increase in T c ; the average pressure coefficient dT c /dP is 5.40 K/GPa at P = .74 GPa, much smaller than 15.47 and 15.90 K/GPa for La 0.7 Ca 0.3 MnO 3 and La 0.9 Ca 0.1 MnO 3 , respectively, due to the different distortion degree of MnO 6 octahedra in Ca and Sr doped manganites. (c) In the temperature region below T c , the pressure reduces M, that is, ΔM < 0. M is determined by the competition between the Mn 3+-O-Mn 4+ double exchange and the interparticle dipolar interaction. The pressure enhances the interparticle dipolar interaction, leading to a significant decrease in magnetization. The resistivity of LSMO exhibits the metallic behavior in the temperature range of 5 K~370 K; it decreases as the applied magnetic field H increases from 0 to 7 T, that is, the magnetoresistance effect which is more significant around T c. The fitting to the low-temperature resistivity shows that the applied magnetic field reduces the scattering from the grain boundary, electron, phonon, and magnon, especially reduces the electron-electron scattering. K E Y W O R D S double exchange, Jahn-Teller distortion, La 0.7 Sr 0.3 MnO 3 , magnetic properties, pressure How to cite this article: Zhang X, Han Y, Kan X, et al. Magnetic properties of La 0.7 Sr 0.3 MnO 3 under the pressure and the transport property under the magnetic field.

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Section: Resultssupporting

confidence: 89%

R \bar{3} c

, and the lattice parameter of the pure LSMO are a = b = 5.5073 (1) Å and c = 13.3626 (8) Å, close to the results reported in literatures 60,61 . No impurity phase is observed.…”

Section: Resultssupporting

confidence: 81%

Section: Characterizationmentioning

confidence: 96%

Section: Characterizationmentioning

confidence: 97%

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Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field

et al. 2020

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“…In view of the extraordinary properties of PSMO, in the present study, an effort has been made to investigate the effect of particle size reduction on the structural, magnetic, and magnetocaloric properties of PSMO. Previously, we had studied the influence of particle size reduction on the magnetism of La 0.7-Sr 0.3 MnO 3 (LSMO) where we noticed a systematic decrease in the net magnetization with a decrease in particle size along with the appearance of Griffith's like singularity [38]. Even [1].…”

Section: Introductionmentioning

confidence: 98%

Tuning magnetic and magnetocaloric properties of Pr0.6Sr0.4MnO3 through size modifications

Souza

Vagadia

Daivajna

2021

J Mater Sci: Mater Electron

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Particle size as an effective tool for controlling the magnetic and magnetocaloric properties of Pr0.6Sr0.4MnO3 samples has been studied. In the present work, a direct influence of particle size on the magnitude of magnetization and magnetic transition temperature, TC, can be seen. The TC drops from 309 to 242 K, while the saturation magnetization (MS) decreases from 3.6 to 0.5 μB/f.u. as the particle changes from 120 to 9 nm. Concurrently, coercivity (HC) exhibits a drastic rise emphasizing the enhanced surface disorder in the nanoparticles. Another interesting observation is in the magnetic entropy change, ΔS, which though decreases in magnitude from 5.51 to 3.90 J/Kg-K as particle size decreases from 120 to 30 nm, but the temperature range of ΔS (i.e., relative cooling power, RCP) increases from 184.33 to 228.85 J/Kg. Such interplay between magnitude and wider temperature range of ΔS, which can be fine-tuned by particle size, provides an interesting tool for using surface spin disorder, as a control mechanism in modifying physical properties.

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A comparative study of the structural, magnetic transport and electrochemical properties of La0.7Sr0.3MnO3 synthesized by different chemical routes

Navin

Kurchania

2020

Appl. Phys. A

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Size control on the magnetism of La0.7Sr0.3MnO3

Cited by 31 publications

References 48 publications

Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field

Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field

Tuning magnetic and magnetocaloric properties of Pr0.6Sr0.4MnO3 through size modifications

A comparative study of the structural, magnetic transport and electrochemical properties of La0.7Sr0.3MnO3 synthesized by different chemical routes

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Size control on the magnetism of La0.7Sr0.3MnO3

Cited by 31 publications

References 48 publications

Magnetic properties of La0.7Sr0.3MnO3 under the pressure and the transport property under the magnetic field

Magnetic properties of La0.7Sr0.3MnO3 under the pressure and the transport property under the magnetic field

Tuning magnetic and magnetocaloric properties of Pr0.6Sr0.4MnO3 through size modifications

A comparative study of the structural, magnetic transport and electrochemical properties of La0.7Sr0.3MnO3 synthesized by different chemical routes

Contact Info

Product

Resources

About

Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field

Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field