Size distribution effect on the magnetization and magneto-resistance in ferromagnetic nanostructured manganites

D. García; B. Alascio; D. G. Lamas; D. Niebieskikwiat; A. Caneiro; R. D. Sánchez; E. D. Cabanillas

doi:10.1016/j.jpcs.2005.07.004

Size distribution effect on the magnetization and magneto-resistance in ferromagnetic nanostructured manganites

D. García
, B. Alascio
, D. G. Lamas
, D. Niebieskikwiat
, A. Caneiro
, R. D. Sánchez^*
, E. D. Cabanillas

^*Corresponding author for this work

Instituto Balseiro
CIC-CONICET
CITEFA-CONICET
Centro Atómico Constituyentes

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

5 Scopus citations

Abstract

We present experimental data of magnetization and magneto-resistance of nanostructured La _2/3B _1/3MnO ₃ with B=Ca, Sr, which present difference between the coercive field in the magnetization loop with their corresponding maximum value in the magneto-resistance. This difference is described by a model that include, size distribution of magnetic particles, randomly oriented anisotropy axis and electronic transfer between the particles, which is mediated by spin-polarized tunneling process. Also, the model predicts that the maximum magneto-resistance can be, in the magnetic disorder state, two times larger than the experimental value. The model results can be used to estimate the size dispersion of nanoparticles in similar systems.

Original language	English
Pages (from-to)	1687-1694
Number of pages	8
Journal	Journal of Physics and Chemistry of Solids
Volume	66
Issue number	10
DOIs	https://doi.org/10.1016/j.jpcs.2005.07.004
State	Published - Oct 2005
Externally published	Yes

Keywords

A. Magnetic materials
B. Sol-gel growth
D. Electrical properties
D. Magnetic properties

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10.1016/j.jpcs.2005.07.004

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@article{6058176fbe3a4312ab7299d930c3d0a9,

title = "Size distribution effect on the magnetization and magneto-resistance in ferromagnetic nanostructured manganites",

abstract = "We present experimental data of magnetization and magneto-resistance of nanostructured La 2/3B 1/3MnO 3 with B=Ca, Sr, which present difference between the coercive field in the magnetization loop with their corresponding maximum value in the magneto-resistance. This difference is described by a model that include, size distribution of magnetic particles, randomly oriented anisotropy axis and electronic transfer between the particles, which is mediated by spin-polarized tunneling process. Also, the model predicts that the maximum magneto-resistance can be, in the magnetic disorder state, two times larger than the experimental value. The model results can be used to estimate the size dispersion of nanoparticles in similar systems.",

keywords = "A. Magnetic materials, B. Sol-gel growth, D. Electrical properties, D. Magnetic properties",

author = "D. Garc{\'i}a and B. Alascio and Lamas, \{D. G.\} and D. Niebieskikwiat and A. Caneiro and S{\'a}nchez, \{R. D.\} and Cabanillas, \{E. D.\}",

note = "Funding Information: This work was partially supported by ANPCyT (Argentina) through the PICT 03-05266, CONICET (Argentina) and Fundaci{\'o}n Antorchas (Argentina).",

year = "2005",

month = oct,

doi = "10.1016/j.jpcs.2005.07.004",

language = "Ingl{\'e}s",

volume = "66",

pages = "1687--1694",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Ltd",

number = "10",

}

TY - JOUR

T1 - Size distribution effect on the magnetization and magneto-resistance in ferromagnetic nanostructured manganites

AU - García, D.

AU - Alascio, B.

AU - Lamas, D. G.

AU - Niebieskikwiat, D.

AU - Caneiro, A.

AU - Sánchez, R. D.

AU - Cabanillas, E. D.

N1 - Funding Information: This work was partially supported by ANPCyT (Argentina) through the PICT 03-05266, CONICET (Argentina) and Fundación Antorchas (Argentina).

PY - 2005/10

Y1 - 2005/10

N2 - We present experimental data of magnetization and magneto-resistance of nanostructured La 2/3B 1/3MnO 3 with B=Ca, Sr, which present difference between the coercive field in the magnetization loop with their corresponding maximum value in the magneto-resistance. This difference is described by a model that include, size distribution of magnetic particles, randomly oriented anisotropy axis and electronic transfer between the particles, which is mediated by spin-polarized tunneling process. Also, the model predicts that the maximum magneto-resistance can be, in the magnetic disorder state, two times larger than the experimental value. The model results can be used to estimate the size dispersion of nanoparticles in similar systems.

AB - We present experimental data of magnetization and magneto-resistance of nanostructured La 2/3B 1/3MnO 3 with B=Ca, Sr, which present difference between the coercive field in the magnetization loop with their corresponding maximum value in the magneto-resistance. This difference is described by a model that include, size distribution of magnetic particles, randomly oriented anisotropy axis and electronic transfer between the particles, which is mediated by spin-polarized tunneling process. Also, the model predicts that the maximum magneto-resistance can be, in the magnetic disorder state, two times larger than the experimental value. The model results can be used to estimate the size dispersion of nanoparticles in similar systems.

KW - A. Magnetic materials

KW - B. Sol-gel growth

KW - D. Electrical properties

KW - D. Magnetic properties

UR - https://www.scopus.com/pages/publications/28944451688

U2 - 10.1016/j.jpcs.2005.07.004

DO - 10.1016/j.jpcs.2005.07.004

M3 - Artículo

AN - SCOPUS:28944451688

SN - 0022-3697

VL - 66

SP - 1687

EP - 1694

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 10

ER -

Size distribution effect on the magnetization and magneto-resistance in ferromagnetic nanostructured manganites

Abstract

Keywords

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