Exploration of magnetic order in Pr0.5Ca0.5CoO3-δ (δ=0) below the metal-insulator transition

被引：4

作者：

Baron-Gonzalez, A. J. ^{[1
]}

Frontera, C. ^{[1
]}

Garcia-Munoz, J. L. ^{[1
]}

Blasco, J. ^{[2
]}

Ritter, C. ^{[3
]}

Valencia, S. ^{[4
]}

Feyerherm, R. ^{[4
]}

Dudzik, E. ^{[4
]}

机构：

[1] CSIC, Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain

[2] Univ Zaragoza, CSIC, Inst Ciencias Mat Aragon, Dept Fis Mat Condensada, Zaragoza 50009, Spain

[3] Inst Laue Langevin, F-38100 Grenoble, France

[4] Berlin Electron Storage Ring Soc Synchrotron Radia, Berlin, Germany

来源：

VI ENCUENTRO FRANCO-ESPANOL DE QUIMICA Y FISICA DEL ESTADO SOLIDO - VI RENCONTRE FRANCO-ESPAGNOLE SUR LA CHIMIE ET LA PHYSIQUE DE L ETAT SOLIDE | 2010年 / 8卷

关键词：

magnetic order; metal- insulator transition; cobaltites; perovskites; PEROVSKITE;

D O I：

10.1016/j.phpro.2010.10.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated the low temperature magnetic state of Pr0.5Ca0.5CoO3-delta with (delta=0) by means of resistivity, dc magnetization, susceptibility, magnetotransport and neutron diffraction. We find that below the metal-insulator transition (MIT) this system can be described as a paramagnetic insulator with dominant ferromagnetic interactions between Co atoms. In this regime, it presents a considerable negative magnetoresistance (20%-40%), while above MIT the magnetoresistance is negligible or even slightly positive. Neutron diffraction measurements reveal that there is no long-range ferromagnetic (FM) or antiferromagnetic (AFM) order. These results are in contradiction with the spin state picture previously drawn for this system. (C) 2010 Published by Elsevier Ltd.

引用

页码：73 / 77

页数：5

共 50 条

[31] Metal-insulator transition in orthorhombic perovskite-type Ca(Mn1-x Nbx)O3
Taguchi, H
PHYSICA B, 2001, 304 (1-4): : 38 - 44
[32] Ground state and the metal-insulator transition in (Pr1-y Y y )1-x Ca x CoO3 (0.45 aparts per thousandcurrency sign x aparts per thousandcurrency sign 0.55) cobaltites
Baron-Gonzalez, A. J.
Garcia-Munoz, J. L.
Herrero-Martin, J.
Frontera, C.
Subias, G.
Blasco, J.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2013, 63 (03) : 791 - 794
[33] The Preparation, Structure, and Metal-Insulator Transition in Bulk Nd1-xCaxNiO3 (x=0 ∼ 0.3)
Yang, Hongwei
Wen, Zhiwei
Cui, Yajing
Chen, Yongliang
Zhao, Yong
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2021, 34 (09) : 2339 - 2347
[34] Robust metal-insulator transition in "112"-layered double perovskites Y1-xLnxBaCo2O5.50 ± δ (Ln = Sm, Eu and Gd; x=0, 0.5 and 1)
Bhattacharya, Sudipa
Das, Radhamadhab
Haque, Ariful
Kundu, Asish K.
Seikh, Md. Motin
JOURNAL OF ALLOYS AND COMPOUNDS, 2022, 914
[35] Role of holes states on metal to insulator transition and collapse of magnetic ordering in LaFe1-xNixO3 (x=0.0-0.5)
Idrees, M.
Nadeem, M.
Siddique, M.
CURRENT APPLIED PHYSICS, 2013, 13 (03) : 448 - 452
[36] Strain Induced Metal-Insulator Transition of Magnetic SrRuO3 Single Layer in SrRuO3/SrTiO3 Superlattice
Huang, Angus
Hung, Sheng-Hsiung
Jeng, Horng-Tay
APPLIED SCIENCES-BASEL, 2018, 8 (11):
[37] Magnetic anisotropy and metal-insulator transition in SrRuO3 thin films at different growth temperatures
Wang, X. W.
Wang, X.
Zhang, Y. Q.
Zhu, Y. L.
Wang, Z. J.
Zhang, Z. D.
JOURNAL OF APPLIED PHYSICS, 2010, 107 (11)
[38] Study of critical magnetic behavior around the ferromagnetic-paramagnetic phase transition of the half-doped perovskite Nd0.5Ba0.5CoO3
Souifi, Karim
Nasri, M.
Charguia, Raihane
Hcini, Sobhi
Alzahrani, Bandar
Bouazizi, Mohamed Lamjed
Dhahri, E.
Hlil, E. K.
Khelifi, J.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2021, 127 (11):
[39] Anisotropic strains, metal-insulator transition, and magnetoresistance of La0.7Ca0.3MnO3 films
Song, JH
Park, JH
Jeong, YH
Koo, TY
PHYSICA B-CONDENSED MATTER, 2002, 312 : 729 - 731
[40] Synthesis, structure and magnetic properties of La1-xLnxCr0.5Co0.5O3 (x=0 and 0.2 & Ln = Pr, Sm and Gd) perovskites
Ghosh, Debamalya
Das, Radhamadhab
Haque, Ariful
Ghorai, Kalyan
Gayen, Arup
Mahata, Partha
Kundu, Asish K.
Seikh, Md Motin
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2021, 523 (523)

← 1 2 3 4 5 →