Temperature and magnetic field dependence of the coexistent phases in La1-xCaxMnO3+δ (x = 0.47, 0.49)

Yousuke Watanabe; Kohki Takahashi; Satoshi Awaji; Kazuo Watanabe; Hiroyuki Fujishiro; Manabu Ikebe

doi:10.1143/JPSJ.72.817

Temperature and magnetic field dependence of the coexistent phases in La_1-xCa_xMnO_3+δ (x = 0.47, 0.49)

Yousuke Watanabe, Kohki Takahashi, Satoshi Awaji, Kazuo Watanabe, Hiroyuki Fujishiro, Manabu Ikebe

High Field Laboratory for Superconducting Materials

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

4 Citations (Scopus)

Abstract

X-ray diffraction measurements under high and low temperature, and magnetic field have been performed for the doped La_1-xCa_xMnO _3+δ polycrystals to clarify the coexistent phases and their structures around the composition of x ∼ 0.5. By measurements at high temperature, the transition from a Pnma to an Imma space group symmetry phase has been firstly observed in this system at the temperature between 500°C and 600°C. At low temperature, the importance of the measurement of (131) reflection is noticed and the phase fraction of two similar Pnma phases with ferromagnetic and anti-ferromagnetic states is determined. It is found that the application of the magnetic field by 5 T and the slight change of the composition x by 0.02 remarkably affect this phase fraction.

Original language	English
Pages (from-to)	817-821
Number of pages	5
Journal	journal of the physical society of japan
Volume	72
Issue number	4
DOIs	https://doi.org/10.1143/JPSJ.72.817
Publication status	Published - 2003 Apr 1

Keywords

CMR
Imma
Manganites
Perovskites
Pnma
X-ray diffraction

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.72.817

Cite this

@article{1dd1d3ddc13b407cb451bebcad193dbd,

title = "Temperature and magnetic field dependence of the coexistent phases in La1-xCaxMnO3+δ (x = 0.47, 0.49)",

abstract = "X-ray diffraction measurements under high and low temperature, and magnetic field have been performed for the doped La1-xCaxMnO 3+δ polycrystals to clarify the coexistent phases and their structures around the composition of x ∼ 0.5. By measurements at high temperature, the transition from a Pnma to an Imma space group symmetry phase has been firstly observed in this system at the temperature between 500°C and 600°C. At low temperature, the importance of the measurement of (131) reflection is noticed and the phase fraction of two similar Pnma phases with ferromagnetic and anti-ferromagnetic states is determined. It is found that the application of the magnetic field by 5 T and the slight change of the composition x by 0.02 remarkably affect this phase fraction.",

keywords = "CMR, Imma, Manganites, Perovskites, Pnma, X-ray diffraction",

author = "Yousuke Watanabe and Kohki Takahashi and Satoshi Awaji and Kazuo Watanabe and Hiroyuki Fujishiro and Manabu Ikebe",

year = "2003",

month = apr,

day = "1",

doi = "10.1143/JPSJ.72.817",

language = "English",

volume = "72",

pages = "817--821",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "4",

}

TY - JOUR

T1 - Temperature and magnetic field dependence of the coexistent phases in La1-xCaxMnO3+δ (x = 0.47, 0.49)

AU - Watanabe, Yousuke

AU - Takahashi, Kohki

AU - Awaji, Satoshi

AU - Watanabe, Kazuo

AU - Fujishiro, Hiroyuki

AU - Ikebe, Manabu

PY - 2003/4/1

Y1 - 2003/4/1

N2 - X-ray diffraction measurements under high and low temperature, and magnetic field have been performed for the doped La1-xCaxMnO 3+δ polycrystals to clarify the coexistent phases and their structures around the composition of x ∼ 0.5. By measurements at high temperature, the transition from a Pnma to an Imma space group symmetry phase has been firstly observed in this system at the temperature between 500°C and 600°C. At low temperature, the importance of the measurement of (131) reflection is noticed and the phase fraction of two similar Pnma phases with ferromagnetic and anti-ferromagnetic states is determined. It is found that the application of the magnetic field by 5 T and the slight change of the composition x by 0.02 remarkably affect this phase fraction.

AB - X-ray diffraction measurements under high and low temperature, and magnetic field have been performed for the doped La1-xCaxMnO 3+δ polycrystals to clarify the coexistent phases and their structures around the composition of x ∼ 0.5. By measurements at high temperature, the transition from a Pnma to an Imma space group symmetry phase has been firstly observed in this system at the temperature between 500°C and 600°C. At low temperature, the importance of the measurement of (131) reflection is noticed and the phase fraction of two similar Pnma phases with ferromagnetic and anti-ferromagnetic states is determined. It is found that the application of the magnetic field by 5 T and the slight change of the composition x by 0.02 remarkably affect this phase fraction.

KW - CMR

KW - Imma

KW - Manganites

KW - Perovskites

KW - Pnma

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=0038323309&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038323309&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.72.817

DO - 10.1143/JPSJ.72.817

M3 - Article

AN - SCOPUS:0038323309

SN - 0031-9015

VL - 72

SP - 817

EP - 821

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 4

ER -