Enhancement of the low field magnetoresistance by grain boundary modification in Sr2FeMoO6+δ

D. Niebieskikwiat; A. Caneiro; R. D. Sánchez; J. Fontcuberta

doi:10.1016/S0921-4526(02)00655-5

Enhancement of the low field magnetoresistance by grain boundary modification in Sr₂FeMoO_6+δ

D. Niebieskikwiat^*
, A. Caneiro
, R. D. Sánchez
, J. Fontcuberta

^*Corresponding author for this work

Instituto Bolseiro
Departament de Fisica de la Universitat Autonoma de Barcelona

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

16 Scopus citations

Abstract

We study the magnetic and electric properties of polycrystalline Sr₂FeMoO_6+δ with controlled oxygen content, for nominal values δ = 0 and 0.04. While the magnetization and lattice parameters are the same in both samples, the resistivity and the magnetoresistance are greatly enhanced in the δ = 0.04 sample. This behavior is related to the formation of an impurity (insulating) phase at the grain boundaries, thus reinforcing the intergrain tunneling barrier.

Original language	English
Pages (from-to)	107-110
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	320
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4526(02)00655-5
State	Published - Jul 2002
Externally published	Yes

Keywords

Double perovskites
Grain boundaries
Magnetoresistance

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10.1016/S0921-4526(02)00655-5

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title = "Enhancement of the low field magnetoresistance by grain boundary modification in Sr2FeMoO6+δ",

abstract = "We study the magnetic and electric properties of polycrystalline Sr2FeMoO6+δ with controlled oxygen content, for nominal values δ = 0 and 0.04. While the magnetization and lattice parameters are the same in both samples, the resistivity and the magnetoresistance are greatly enhanced in the δ = 0.04 sample. This behavior is related to the formation of an impurity (insulating) phase at the grain boundaries, thus reinforcing the intergrain tunneling barrier.",

keywords = "Double perovskites, Grain boundaries, Magnetoresistance",

author = "D. Niebieskikwiat and A. Caneiro and S{\'a}nchez, \{R. D.\} and J. Fontcuberta",

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T1 - Enhancement of the low field magnetoresistance by grain boundary modification in Sr2FeMoO6+δ

AU - Niebieskikwiat, D.

AU - Caneiro, A.

AU - Sánchez, R. D.

AU - Fontcuberta, J.

PY - 2002/7

Y1 - 2002/7

N2 - We study the magnetic and electric properties of polycrystalline Sr2FeMoO6+δ with controlled oxygen content, for nominal values δ = 0 and 0.04. While the magnetization and lattice parameters are the same in both samples, the resistivity and the magnetoresistance are greatly enhanced in the δ = 0.04 sample. This behavior is related to the formation of an impurity (insulating) phase at the grain boundaries, thus reinforcing the intergrain tunneling barrier.

AB - We study the magnetic and electric properties of polycrystalline Sr2FeMoO6+δ with controlled oxygen content, for nominal values δ = 0 and 0.04. While the magnetization and lattice parameters are the same in both samples, the resistivity and the magnetoresistance are greatly enhanced in the δ = 0.04 sample. This behavior is related to the formation of an impurity (insulating) phase at the grain boundaries, thus reinforcing the intergrain tunneling barrier.

KW - Double perovskites

KW - Grain boundaries

KW - Magnetoresistance

UR - https://www.scopus.com/pages/publications/0036646223

U2 - 10.1016/S0921-4526(02)00655-5

DO - 10.1016/S0921-4526(02)00655-5

M3 - Artículo

AN - SCOPUS:0036646223

SN - 0921-4526

VL - 320

SP - 107

EP - 110

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-4

ER -

Enhancement of the low field magnetoresistance by grain boundary modification in Sr₂FeMoO_6+δ

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Keywords

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