Electronic configuration and magnetic properties of La0.7Ca0.3Mn1-xFexO3 perovskite NPs: The effect of a lower Fe3+ concentration

H. A. Martinez-Rodriguez; Kalu Onyekachi; A. Concha-Balderrama; G. Herrera-Pérez; J. A. Matutes-Aquino; J. F. Jurado; M. H. Bocanegra-Bernal; V. H. Ramos-Sánchez; J. A. Duarte-Moller; A. Reyes-Rojas

doi:10.1016/j.jallcom.2019.152668

Electronic configuration and magnetic properties of La_0.7Ca_0.3Mn_1-xFe_xO₃ perovskite NPs: The effect of a lower Fe³⁺ concentration

H. A. Martinez-Rodriguez
, Kalu Onyekachi
, A. Concha-Balderrama
, G. Herrera-Pérez
, J. A. Matutes-Aquino
, J. F. Jurado
, M. H. Bocanegra-Bernal
, V. H. Ramos-Sánchez
, J. A. Duarte-Moller
, A. Reyes-Rojas

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Effect of nanoparticle size on electronic configuration and magnetic properties of La_0.7Ca_0.3Mn_1-xFe_xO₃ (x = 0, 0.005, 0.01, 0.015 and 0.02) perovskites have been investigated. Magnetic properties are dependent on nanoparticle size. It was noted that independently of the 3d⁵ ion concentration, if the ABO₃ perovskite solid solution has small enough NPs, they might induce a magnetization mechanism, which is thermally fluctuated, causing magnetic anisotropy of individual grains, and consequently reducing the solid solution's magnetic moment. The 3d⁵ ion (Fe³⁺) concentration with its incomplete d shell plays an important role in the double exchange, DE. Subsequently, NPs around 28 nm are strongly influenced at 100 K by a paramagnetic to ferromagnetic transition, which presents a spin glass-type order as the temperature continues to decrease.

Original language	English (US)
Article number	152668
Journal	Journal of Alloys and Compounds
Volume	816
DOIs	https://doi.org/10.1016/j.jallcom.2019.152668
State	Published - Mar 5 2020
Externally published	Yes

Keywords

Core-shell NPs
FC
Jahn-teller distortion
Manganite
ZFC

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2019.152668

Cite this

Martinez-Rodriguez, H. A., Onyekachi, K., Concha-Balderrama, A., Herrera-Pérez, G., Matutes-Aquino, J. A., Jurado, J. F., Bocanegra-Bernal, M. H., Ramos-Sánchez, V. H., Duarte-Moller, J. A., & Reyes-Rojas, A. (2020). Electronic configuration and magnetic properties of La_0.7Ca_0.3Mn_1-xFe_xO₃ perovskite NPs: The effect of a lower Fe³⁺ concentration. Journal of Alloys and Compounds, 816, Article 152668. https://doi.org/10.1016/j.jallcom.2019.152668

Martinez-Rodriguez, HA, Onyekachi, K, Concha-Balderrama, A, Herrera-Pérez, G, Matutes-Aquino, JA, Jurado, JF, Bocanegra-Bernal, MH, Ramos-Sánchez, VH, Duarte-Moller, JA & Reyes-Rojas, A 2020, 'Electronic configuration and magnetic properties of La_0.7Ca_0.3Mn_1-xFe_xO₃ perovskite NPs: The effect of a lower Fe³⁺ concentration', Journal of Alloys and Compounds, vol. 816, 152668. https://doi.org/10.1016/j.jallcom.2019.152668

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title = "Electronic configuration and magnetic properties of La0.7Ca0.3Mn1-xFexO3 perovskite NPs: The effect of a lower Fe3+ concentration",

abstract = "Effect of nanoparticle size on electronic configuration and magnetic properties of La0.7Ca0.3Mn1-xFexO3 (x = 0, 0.005, 0.01, 0.015 and 0.02) perovskites have been investigated. Magnetic properties are dependent on nanoparticle size. It was noted that independently of the 3d5 ion concentration, if the ABO3 perovskite solid solution has small enough NPs, they might induce a magnetization mechanism, which is thermally fluctuated, causing magnetic anisotropy of individual grains, and consequently reducing the solid solution's magnetic moment. The 3d5 ion (Fe3+) concentration with its incomplete d shell plays an important role in the double exchange, DE. Subsequently, NPs around 28 nm are strongly influenced at 100 K by a paramagnetic to ferromagnetic transition, which presents a spin glass-type order as the temperature continues to decrease.",

keywords = "Core-shell NPs, FC, Jahn-teller distortion, Manganite, ZFC",

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AU - Onyekachi, Kalu

AU - Concha-Balderrama, A.

AU - Herrera-Pérez, G.

AU - Matutes-Aquino, J. A.

AU - Jurado, J. F.

AU - Bocanegra-Bernal, M. H.

AU - Ramos-Sánchez, V. H.

AU - Duarte-Moller, J. A.

AU - Reyes-Rojas, A.

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N2 - Effect of nanoparticle size on electronic configuration and magnetic properties of La0.7Ca0.3Mn1-xFexO3 (x = 0, 0.005, 0.01, 0.015 and 0.02) perovskites have been investigated. Magnetic properties are dependent on nanoparticle size. It was noted that independently of the 3d5 ion concentration, if the ABO3 perovskite solid solution has small enough NPs, they might induce a magnetization mechanism, which is thermally fluctuated, causing magnetic anisotropy of individual grains, and consequently reducing the solid solution's magnetic moment. The 3d5 ion (Fe3+) concentration with its incomplete d shell plays an important role in the double exchange, DE. Subsequently, NPs around 28 nm are strongly influenced at 100 K by a paramagnetic to ferromagnetic transition, which presents a spin glass-type order as the temperature continues to decrease.

AB - Effect of nanoparticle size on electronic configuration and magnetic properties of La0.7Ca0.3Mn1-xFexO3 (x = 0, 0.005, 0.01, 0.015 and 0.02) perovskites have been investigated. Magnetic properties are dependent on nanoparticle size. It was noted that independently of the 3d5 ion concentration, if the ABO3 perovskite solid solution has small enough NPs, they might induce a magnetization mechanism, which is thermally fluctuated, causing magnetic anisotropy of individual grains, and consequently reducing the solid solution's magnetic moment. The 3d5 ion (Fe3+) concentration with its incomplete d shell plays an important role in the double exchange, DE. Subsequently, NPs around 28 nm are strongly influenced at 100 K by a paramagnetic to ferromagnetic transition, which presents a spin glass-type order as the temperature continues to decrease.

KW - Core-shell NPs

KW - FC

KW - Jahn-teller distortion

KW - Manganite

KW - ZFC

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