From A-type antiferromagnetism to ferromagnetism in half-doped perovskite manganites

Autret-Lambert, Cécile; Martin, C.; Hervieu, M.; Maignan, A.; Raveau, B.; André, G.; Bourée, F.; Jirák, Z.

doi:10.1016/j.jmmm.2003.08.018

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…However, the disorder was not as high as in the present La 0.5 Ca 0.5−x Ba x MnO 3 series. In this series of compounds, the variation of disorder from 3.24 × 10 −4 for x = 0 to 1.62 × 10 −2 for x = 0.5 is significantly higher than other series of compounds reported previously [15][16][17][18][19][20][21][22].…”

Section: Introductioncontrasting

confidence: 69%

Structural and magnetic ordering in La_0.5Ca_0.5−xBa_xMnO₃(0 <x≤ 0.5) manganite

Dhiman

Das

Nigam

2009

J. Phys.: Condens. Matter

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Section: Introductioncontrasting

confidence: 69%

Structural and magnetic ordering in La_0.5Ca_0.5−xBa_xMnO₃(0 <x≤ 0.5) manganite

Dhiman

Das

Nigam

2009

J. Phys.: Condens. Matter

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“…In turn, such a decrease enhances competing interac tions. As concerns cation disordering parameter σ 2 , it was demonstrated [19] that a decrease in σ 2 is the most important stabilization factor of the ferromagnetic state. Quantity T C increases noticeably with decreasing σ 2 even if there is a complex phase separated (ferromag netic + antiferromagnetic) state at low temperatures.…”

Section: Resultsmentioning

confidence: 99%

Structural and magnetic phase separation of complex half-doped manganites by the example of Sm0.32Pr0.18Sr0.5MnO3

Курбаков

Sarapin

2015

J. Synch. Investig.

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High resolution neutron powder diffraction is used to investigate the phase separation and micro scopic nature of the magnetoresistance in complex half doped manganites. Investigations are performed by the example of Sm 0.32 Pr 0.18 Sr 0.5 MnO 3 exhibiting the colossal magnetoresistance effect. The structural tran sition from a high temperature orthorhombic Pbnm phase to a mixed phase containing two (orthorhombic Pbnm and monoclinic P2 1 /m) phases is revealed. A gradual decrease in the amount of the orthorhombic phase and, consequently, an increase in the amount of the monoclinic phase are observed with decreasing temper ature. Redistribution of the two phases ceases below T ≈ 100 K. Low temperature analysis of the magnetic contribution to the experimental neutron diffraction patterns indicates that the magnetic ground state of the compound under study is phase separated and corresponds to a mixed state involving three magnetic phases formed at different temperatures: a ferromagnetic phase , A type antiferromagnetic, and CE type charge ordered antiferromagnetic phases with charge orbital ordering. Ferromagnetic ordering arises near room temperature in the orthorhombic Pbnm phase and manifests itself only until helium temperatures. The A and CE types antiferromagnetic states (T N ≈ 170 and 120 K, respectively) appear in the monoclinic crystallo graphic phase.

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“…One of the most promising members of this family is La1-xAxMnO3 (A=Ca 2+ , Sr 2+ , Ba 2+ ,...etc. ), a half-doped perovskite manganite La0.5Ba0.5MnO3 (LBMO) with a Curie temperature close to room temperature [1]− [3]. Previous studies have selected half-doped perovskites of this type for the creation of dielectric ferromagnets with high-frequency properties and self-magnetization.…”

Section: Introductionmentioning

confidence: 99%

Structural, Morphological and Magnetic Investigation of Half-Doped La0.5Ba0.5MnO3 Perovskite Nanoparticles

Samancıoğlu

2024

Open Journal of Nano

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This study investigated the effect of barium (Ba) substitution for lanthanum (La) on the magnetic properties of the half-doped perovskite manganite compound La0.5Ba0.5MnO3 (LBMO). The LBMO sample was prepared via the sol-gel method and sintered in air at 1000°C for 24 hours. Scanning electron microscopy (SEM)-energy dispersive X-ray spectroscopy (EDS) analysis revealed random formation of BaMnO3 nanorods on the LBMO surface. The LBMO perovskite exhibited a particle size distribution of approximately 60 nm, while the BaMnO3 nanorods possessed widths ranging from 100-250 nm and lengths between 5-20 μm. X-ray diffraction (XRD) analysis found that the main perovskite compound (LBMO) exhibits a cubic crystal structure (a = 3.9108 Å), while the nanorods (BaMnO3) possess a hexagonal crystal structure (a = 5.6454 Å, c = 4.8224 Å). The Curie temperature (TC) was determined to be approximately 330 K, close to room temperature, zero field cooling (ZFC) and field cooling (FC) curves to elucidate the magnetic properties. Furthermore, magnetization measurements yielded a magnetic entropy change (-ΔSM) of 0.62 J/kgK at 1 T and 2.25 J/kgK at 6 T.

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From A-type antiferromagnetism to ferromagnetism in half-doped perovskite manganites

Cited by 11 publications

References 15 publications

Structural and magnetic ordering in La_0.5Ca_0.5−xBa_xMnO₃(0 <x≤ 0.5) manganite

Structural and magnetic ordering in La_0.5Ca_0.5−xBa_xMnO₃(0 <x≤ 0.5) manganite

Structural and magnetic phase separation of complex half-doped manganites by the example of Sm0.32Pr0.18Sr0.5MnO3

Structural, Morphological and Magnetic Investigation of Half-Doped La0.5Ba0.5MnO3 Perovskite Nanoparticles

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From A-type antiferromagnetism to ferromagnetism in half-doped perovskite manganites

Cited by 11 publications

References 15 publications

Structural and magnetic ordering in La0.5Ca0.5−xBaxMnO3(0 <x≤ 0.5) manganite

Structural and magnetic ordering in La0.5Ca0.5−xBaxMnO3(0 <x≤ 0.5) manganite

Structural and magnetic phase separation of complex half-doped manganites by the example of Sm0.32Pr0.18Sr0.5MnO3

Structural, Morphological and Magnetic Investigation of Half-Doped La0.5Ba0.5MnO3 Perovskite Nanoparticles

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Structural and magnetic ordering in La_0.5Ca_0.5−xBa_xMnO₃(0 <x≤ 0.5) manganite

Structural and magnetic ordering in La_0.5Ca_0.5−xBa_xMnO₃(0 <x≤ 0.5) manganite