Structural and magnetic properties of layered Sr7Mn4O15

J F  Vente; K V  Kamenev; D A  Sokolov

doi:10.1103/PhysRevB.64.214403

Structural and magnetic properties of layered Sr₇Mn₄O₁₅

J F Vente, K V Kamenev, D A Sokolov

School of Engineering

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

Abstract

The magnetic and structural properties of the layered manganite Sr7Mn4O15 have been studied by powder neutron diffraction and magnetic susceptibility techniques between 5 and 300 K. The structure consists of pairs of face sharing MnO6 octahedra to form Mn2O9 dimers. The description of the crystal structure has been improved by employing a model in which some of the Sr and O ions are statistically distributed over two different sites. Three different magnetic phases can be distinguished in the temperature region studied. Below similar to 75 K, the Mn4+ sublattice is antiferromagnetically ordered with an antiparallel alignment between all nearest-neighbor manganese ions. Between similar to 75 and similar to 150 K extensive quasi two-dimensional magnetic clusters are present. At temperatures above similar to 150 K, one can observe correlations related to intradimer spin pairing. Truly paramagnetic behavior is not observed at any temperature below 300 K.

Original language	English
Pages (from-to)	214403
Number of pages	10
Journal	Physical review B
Volume	64
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.64.214403
Publication status	Published - 1 Nov 2001

Keywords / Materials (for Non-textual outputs)

RUDDLESDEN-POPPER COMPOUND
GIANT MAGNETORESISTANCE
COLOSSAL MAGNETORESISTANCE
ELECTRONIC-PROPERTIES
NEUTRON-DIFFRACTION
CRYSTAL
MANGANATES
CA4MN3O10

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10.1103/PhysRevB.64.214403

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title = "Structural and magnetic properties of layered Sr7Mn4O15",

abstract = "The magnetic and structural properties of the layered manganite Sr7Mn4O15 have been studied by powder neutron diffraction and magnetic susceptibility techniques between 5 and 300 K. The structure consists of pairs of face sharing MnO6 octahedra to form Mn2O9 dimers. The description of the crystal structure has been improved by employing a model in which some of the Sr and O ions are statistically distributed over two different sites. Three different magnetic phases can be distinguished in the temperature region studied. Below similar to 75 K, the Mn4+ sublattice is antiferromagnetically ordered with an antiparallel alignment between all nearest-neighbor manganese ions. Between similar to 75 and similar to 150 K extensive quasi two-dimensional magnetic clusters are present. At temperatures above similar to 150 K, one can observe correlations related to intradimer spin pairing. Truly paramagnetic behavior is not observed at any temperature below 300 K.",

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author = "Vente, {J F} and Kamenev, {K V} and Sokolov, {D A}",

year = "2001",

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doi = "10.1103/PhysRevB.64.214403",

language = "English",

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T1 - Structural and magnetic properties of layered Sr7Mn4O15

AU - Vente, J F

AU - Kamenev, K V

AU - Sokolov, D A

PY - 2001/11/1

Y1 - 2001/11/1

N2 - The magnetic and structural properties of the layered manganite Sr7Mn4O15 have been studied by powder neutron diffraction and magnetic susceptibility techniques between 5 and 300 K. The structure consists of pairs of face sharing MnO6 octahedra to form Mn2O9 dimers. The description of the crystal structure has been improved by employing a model in which some of the Sr and O ions are statistically distributed over two different sites. Three different magnetic phases can be distinguished in the temperature region studied. Below similar to 75 K, the Mn4+ sublattice is antiferromagnetically ordered with an antiparallel alignment between all nearest-neighbor manganese ions. Between similar to 75 and similar to 150 K extensive quasi two-dimensional magnetic clusters are present. At temperatures above similar to 150 K, one can observe correlations related to intradimer spin pairing. Truly paramagnetic behavior is not observed at any temperature below 300 K.

AB - The magnetic and structural properties of the layered manganite Sr7Mn4O15 have been studied by powder neutron diffraction and magnetic susceptibility techniques between 5 and 300 K. The structure consists of pairs of face sharing MnO6 octahedra to form Mn2O9 dimers. The description of the crystal structure has been improved by employing a model in which some of the Sr and O ions are statistically distributed over two different sites. Three different magnetic phases can be distinguished in the temperature region studied. Below similar to 75 K, the Mn4+ sublattice is antiferromagnetically ordered with an antiparallel alignment between all nearest-neighbor manganese ions. Between similar to 75 and similar to 150 K extensive quasi two-dimensional magnetic clusters are present. At temperatures above similar to 150 K, one can observe correlations related to intradimer spin pairing. Truly paramagnetic behavior is not observed at any temperature below 300 K.

KW - RUDDLESDEN-POPPER COMPOUND

KW - GIANT MAGNETORESISTANCE

KW - COLOSSAL MAGNETORESISTANCE

KW - ELECTRONIC-PROPERTIES

KW - NEUTRON-DIFFRACTION

KW - CRYSTAL

KW - MANGANATES

KW - CA4MN3O10

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U2 - 10.1103/PhysRevB.64.214403

DO - 10.1103/PhysRevB.64.214403

M3 - Article

SN - 1098-0121

VL - 64

SP - 214403

JO - Physical review B

JF - Physical review B

IS - 21

ER -

Structural and magnetic properties of layered Sr₇Mn₄O₁₅

Abstract

Keywords / Materials (for Non-textual outputs)

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