Asymmetric phase diagram and phase separation in Pr0.5-δCa0.2+δSr0.3MnO3 (-0.04≤δ≤0.04)

D. Niebieskikwiat; R. D. Sánchez; A. Caneiro; B. Maiorov

doi:10.1016/S0921-4526(02)00656-7

Asymmetric phase diagram and phase separation in Pr_0.5-δCa_0.2+δSr_0.3MnO₃ (-0.04≤δ≤0.04)

D. Niebieskikwiat^*
, R. D. Sánchez
, A. Caneiro
, B. Maiorov

^*Corresponding author for this work

Instituto Bolseiro

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

Abstract

We present electric and magnetic properties of polycrystalline Pr_0.5-δCa_0.2+δSr_0.3MnO₃, for δ between -0.04 and 0.04, where the hole concentration is n=0.5+δ. In this series, we study the effects of moving n away from 0.5 on both, the phase diagram and phase separated state. We found that the low temperature ferromagnetic fraction X_FM continuously decreases when n increases. As a result, the samples with n<0.5 (large X_FM) exhibit metallic resistivity at low T while for n>0.5 the insulating state predominates. We construct a detailed T-n phase diagram showing the asymmetries around half-doping.

Original language	English
Pages (from-to)	111-114
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	320
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4526(02)00656-7
State	Published - Jul 2002
Externally published	Yes

Keywords

Charge ordering
Magnetic ordering
Phase separation

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10.1016/S0921-4526(02)00656-7

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title = "Asymmetric phase diagram and phase separation in Pr0.5-δCa0.2+δSr0.3MnO3 (-0.04≤δ≤0.04)",

abstract = "We present electric and magnetic properties of polycrystalline Pr0.5-δCa0.2+δSr0.3MnO3, for δ between -0.04 and 0.04, where the hole concentration is n=0.5+δ. In this series, we study the effects of moving n away from 0.5 on both, the phase diagram and phase separated state. We found that the low temperature ferromagnetic fraction XFM continuously decreases when n increases. As a result, the samples with n<0.5 (large XFM) exhibit metallic resistivity at low T while for n>0.5 the insulating state predominates. We construct a detailed T-n phase diagram showing the asymmetries around half-doping.",

keywords = "Charge ordering, Magnetic ordering, Phase separation",

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

year = "2002",

month = jul,

doi = "10.1016/S0921-4526(02)00656-7",

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volume = "320",

pages = "111--114",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier B.V.",

number = "1-4",

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TY - JOUR

T1 - Asymmetric phase diagram and phase separation in Pr0.5-δCa0.2+δSr0.3MnO3 (-0.04≤δ≤0.04)

AU - Niebieskikwiat, D.

AU - Sánchez, R. D.

AU - Caneiro, A.

AU - Maiorov, B.

PY - 2002/7

Y1 - 2002/7

N2 - We present electric and magnetic properties of polycrystalline Pr0.5-δCa0.2+δSr0.3MnO3, for δ between -0.04 and 0.04, where the hole concentration is n=0.5+δ. In this series, we study the effects of moving n away from 0.5 on both, the phase diagram and phase separated state. We found that the low temperature ferromagnetic fraction XFM continuously decreases when n increases. As a result, the samples with n<0.5 (large XFM) exhibit metallic resistivity at low T while for n>0.5 the insulating state predominates. We construct a detailed T-n phase diagram showing the asymmetries around half-doping.

AB - We present electric and magnetic properties of polycrystalline Pr0.5-δCa0.2+δSr0.3MnO3, for δ between -0.04 and 0.04, where the hole concentration is n=0.5+δ. In this series, we study the effects of moving n away from 0.5 on both, the phase diagram and phase separated state. We found that the low temperature ferromagnetic fraction XFM continuously decreases when n increases. As a result, the samples with n<0.5 (large XFM) exhibit metallic resistivity at low T while for n>0.5 the insulating state predominates. We construct a detailed T-n phase diagram showing the asymmetries around half-doping.

KW - Charge ordering

KW - Magnetic ordering

KW - Phase separation

UR - https://www.scopus.com/pages/publications/0036645824

U2 - 10.1016/S0921-4526(02)00656-7

DO - 10.1016/S0921-4526(02)00656-7

M3 - Artículo

AN - SCOPUS:0036645824

SN - 0921-4526

VL - 320

SP - 111

EP - 114

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-4

ER -

Asymmetric phase diagram and phase separation in Pr_0.5-δCa_0.2+δSr_0.3MnO₃ (-0.04≤δ≤0.04)

Abstract

Keywords

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