NMR study of layered manganite La1.4Sr1.6Mn2O7

C  Kapusta; P C  Riedi; D  Rybicki; C J  Oates; D  Zajac; M  Sikora; C  Marquina; M R  Ibarra

doi:10.1016/j.jmmm.2003.12.1226

NMR study of layered manganite La1.4Sr1.6Mn2O7

C Kapusta, P C Riedi, D Rybicki, C J Oates, D Zajac, M Sikora, C Marquina, M R Ibarra

School of Physics and Astronomy

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

Abstract

A Mn-55 nuclear magnetic resonance study of a layered perovskite La1.4Sr1.6Mn2O7 is reported. Between 4.2 K and the magnetic ordering temperature, 100 K, zero field spin echo spectra consist of signals corresponding to the double-exchange (DE) states and charge localized Mn3+, Mn4+ states. This indicates occurrence of electronic and magnetic phase segregation into ferromagnetic metallic and ferromagnetic insulating regions. Above 100 K a DE line is observed, revealing the presence of long lived metallic clusters. The relation of results to magnetoresistive properties of the compound is discussed. (C) 2003 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	1759-1761
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	272
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.1226
Publication status	Published - May 2004

Keywords

nuclear magnetic resonance
colossal magnetoresistance
NUCLEAR-MAGNETIC-RESONANCE
MAGNETORESISTANCE
CRYSTAL

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10.1016/j.jmmm.2003.12.1226

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title = "NMR study of layered manganite La1.4Sr1.6Mn2O7",

abstract = "A Mn-55 nuclear magnetic resonance study of a layered perovskite La1.4Sr1.6Mn2O7 is reported. Between 4.2 K and the magnetic ordering temperature, 100 K, zero field spin echo spectra consist of signals corresponding to the double-exchange (DE) states and charge localized Mn3+, Mn4+ states. This indicates occurrence of electronic and magnetic phase segregation into ferromagnetic metallic and ferromagnetic insulating regions. Above 100 K a DE line is observed, revealing the presence of long lived metallic clusters. The relation of results to magnetoresistive properties of the compound is discussed. (C) 2003 Elsevier B.V. All rights reserved.",

keywords = "nuclear magnetic resonance, colossal magnetoresistance, NUCLEAR-MAGNETIC-RESONANCE, MAGNETORESISTANCE, CRYSTAL",

author = "C Kapusta and Riedi, {P C} and D Rybicki and Oates, {C J} and D Zajac and M Sikora and C Marquina and Ibarra, {M R}",

year = "2004",

month = may,

doi = "10.1016/j.jmmm.2003.12.1226",

language = "English",

volume = "272",

pages = "1759--1761",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

TY - JOUR

T1 - NMR study of layered manganite La1.4Sr1.6Mn2O7

AU - Kapusta, C

AU - Riedi, P C

AU - Rybicki, D

AU - Oates, C J

AU - Zajac, D

AU - Sikora, M

AU - Marquina, C

AU - Ibarra, M R

PY - 2004/5

Y1 - 2004/5

N2 - A Mn-55 nuclear magnetic resonance study of a layered perovskite La1.4Sr1.6Mn2O7 is reported. Between 4.2 K and the magnetic ordering temperature, 100 K, zero field spin echo spectra consist of signals corresponding to the double-exchange (DE) states and charge localized Mn3+, Mn4+ states. This indicates occurrence of electronic and magnetic phase segregation into ferromagnetic metallic and ferromagnetic insulating regions. Above 100 K a DE line is observed, revealing the presence of long lived metallic clusters. The relation of results to magnetoresistive properties of the compound is discussed. (C) 2003 Elsevier B.V. All rights reserved.

AB - A Mn-55 nuclear magnetic resonance study of a layered perovskite La1.4Sr1.6Mn2O7 is reported. Between 4.2 K and the magnetic ordering temperature, 100 K, zero field spin echo spectra consist of signals corresponding to the double-exchange (DE) states and charge localized Mn3+, Mn4+ states. This indicates occurrence of electronic and magnetic phase segregation into ferromagnetic metallic and ferromagnetic insulating regions. Above 100 K a DE line is observed, revealing the presence of long lived metallic clusters. The relation of results to magnetoresistive properties of the compound is discussed. (C) 2003 Elsevier B.V. All rights reserved.

KW - nuclear magnetic resonance

KW - colossal magnetoresistance

KW - NUCLEAR-MAGNETIC-RESONANCE

KW - MAGNETORESISTANCE

KW - CRYSTAL

U2 - 10.1016/j.jmmm.2003.12.1226

DO - 10.1016/j.jmmm.2003.12.1226

M3 - Article

SN - 0304-8853

VL - 272

SP - 1759

EP - 1761

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

NMR study of layered manganite La1.4Sr1.6Mn2O7

Abstract

Keywords

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