Magnetocapacitance effect in ferromagnetic LiNbO3 nanoparticles

Carlos Díaz-Moreno; Jorge Lopez; Jesus González-Hernández; Roberto Escudero; Jesus L. Heiras; Miguel J. Yacamán; Juan Mendez-Nonell; Abel Hurtado-Macias

doi:10.1016/j.jmmm.2016.01.010

Magnetocapacitance effect in ferromagnetic LiNbO₃ nanoparticles

Carlos Díaz-Moreno, Jorge Lopez, Jesus González-Hernández, Roberto Escudero, Jesus L. Heiras, Miguel J. Yacamán, Juan Mendez-Nonell, Abel Hurtado-Macias

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

9 Scopus citations

Abstract

Magnetocapacitance and magnetization behavior as a function of reduction heat treatment at 650 °C and 900 °C in a 5%H₂-Ar atmosphere on LiNbO₃ nanocrystalline are reported. There is a change of intrinsic dielectric constant (κ) from 822 to 860 produced by spin polarization using an external magnetic field. The Raman, X-ray photoelectron spectroscopy and electron paramagnetic resonance spectroscopy, indicate vibration mode changes localized at Nb-O bonds in the octahedron NbO₆, shifts in the binding energy of the electronic structure of ions of niobium (3d) and the oxygen (1s). It is due to the oxygen vacancies caused by reduction heat treatment process. Moreover there is ions redistribution of Nb⁺³, Nb⁺⁴and Nb⁺⁵ at the surface of the nanoparticles.

Original language	English (US)
Pages (from-to)	291-298
Number of pages	8
Journal	Journal of Magnetism and Magnetic Materials
Volume	407
DOIs	https://doi.org/10.1016/j.jmmm.2016.01.010
State	Published - Jun 1 2016
Externally published	Yes

Keywords

Ferroelectric
Ferromagnetic
Lithium niobate
Magnetocapacitance
Multiferroic
Nanoparticles

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2016.01.010

Cite this

@article{6008689b430f4356b9a5036f143912a3,

title = "Magnetocapacitance effect in ferromagnetic LiNbO3 nanoparticles",

abstract = "Magnetocapacitance and magnetization behavior as a function of reduction heat treatment at 650 °C and 900 °C in a 5%H2-Ar atmosphere on LiNbO3 nanocrystalline are reported. There is a change of intrinsic dielectric constant (κ) from 822 to 860 produced by spin polarization using an external magnetic field. The Raman, X-ray photoelectron spectroscopy and electron paramagnetic resonance spectroscopy, indicate vibration mode changes localized at Nb-O bonds in the octahedron NbO6, shifts in the binding energy of the electronic structure of ions of niobium (3d) and the oxygen (1s). It is due to the oxygen vacancies caused by reduction heat treatment process. Moreover there is ions redistribution of Nb+3, Nb+4and Nb+5 at the surface of the nanoparticles.",

keywords = "Ferroelectric, Ferromagnetic, Lithium niobate, Magnetocapacitance, Multiferroic, Nanoparticles",

author = "Carlos D{\'i}az-Moreno and Jorge Lopez and Jesus Gonz{\'a}lez-Hern{\'a}ndez and Roberto Escudero and Heiras, {Jesus L.} and Yacam{\'a}n, {Miguel J.} and Juan Mendez-Nonell and Abel Hurtado-Macias",

year = "2016",

month = jun,

day = "1",

doi = "10.1016/j.jmmm.2016.01.010",

language = "English (US)",

volume = "407",

pages = "291--298",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

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T1 - Magnetocapacitance effect in ferromagnetic LiNbO3 nanoparticles

AU - Díaz-Moreno, Carlos

AU - Lopez, Jorge

AU - González-Hernández, Jesus

AU - Escudero, Roberto

AU - Heiras, Jesus L.

AU - Yacamán, Miguel J.

AU - Mendez-Nonell, Juan

AU - Hurtado-Macias, Abel

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Magnetocapacitance and magnetization behavior as a function of reduction heat treatment at 650 °C and 900 °C in a 5%H2-Ar atmosphere on LiNbO3 nanocrystalline are reported. There is a change of intrinsic dielectric constant (κ) from 822 to 860 produced by spin polarization using an external magnetic field. The Raman, X-ray photoelectron spectroscopy and electron paramagnetic resonance spectroscopy, indicate vibration mode changes localized at Nb-O bonds in the octahedron NbO6, shifts in the binding energy of the electronic structure of ions of niobium (3d) and the oxygen (1s). It is due to the oxygen vacancies caused by reduction heat treatment process. Moreover there is ions redistribution of Nb+3, Nb+4and Nb+5 at the surface of the nanoparticles.

AB - Magnetocapacitance and magnetization behavior as a function of reduction heat treatment at 650 °C and 900 °C in a 5%H2-Ar atmosphere on LiNbO3 nanocrystalline are reported. There is a change of intrinsic dielectric constant (κ) from 822 to 860 produced by spin polarization using an external magnetic field. The Raman, X-ray photoelectron spectroscopy and electron paramagnetic resonance spectroscopy, indicate vibration mode changes localized at Nb-O bonds in the octahedron NbO6, shifts in the binding energy of the electronic structure of ions of niobium (3d) and the oxygen (1s). It is due to the oxygen vacancies caused by reduction heat treatment process. Moreover there is ions redistribution of Nb+3, Nb+4and Nb+5 at the surface of the nanoparticles.

KW - Ferroelectric

KW - Ferromagnetic

KW - Lithium niobate

KW - Magnetocapacitance

KW - Multiferroic

KW - Nanoparticles

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VL - 407

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EP - 298

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

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