Magnetic dilution and electronic nature in La0.7Pb0.3Mn1-xZnxO3

Tadahiko Kanoh; Masanori Matoba

doi:10.1016/S0022-3697(02)00101-4

Magnetic dilution and electronic nature in La_0.7Pb_0.3Mn_1-xZn_xO₃

Tadahiko Kanoh, Masanori Matoba

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We have studied the magnetic dilution and electronic nature of Zn doping on the Mn site in the colossal magnetoresistant material La_0.7Pb_0.3MnO₃ (x ≤ 0.3). Small non-magnetic Zn²⁺ doping tends to separate the system into ferromagnetic clusters to weaken the long-range ferromagnetic order and to reduce the Curie temperature. The spin polarizability of the x = 0-0.3 samples is estimated to be 0.97-1.00, indicating that the x = 0-0.3 samples are the spin polarized materials in which the conductivity is dominated by single-spin charge carriers. Small doping (x ≥ 0.1) induces the metal-insulator transition and destroys the metallic state with long-range ferromagnetic order.

Original language	English
Pages (from-to)	935-937
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	63
Issue number	6-8
DOIs	https://doi.org/10.1016/S0022-3697(02)00101-4
Publication status	Published - 2002 Jun
Event	Proceedings of the 8th ISSP International Symposium - Tokyo, Japan Duration: 2001 Nov 2 → 2001 Nov 5

Keywords

A. Magnetic materials
C. Photoelectron spectroscopy
D. Magnetic properties
D. Transport properties

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/S0022-3697(02)00101-4

Cite this

@article{57ca8c0878c7452693fbc862be04ad62,

title = "Magnetic dilution and electronic nature in La0.7Pb0.3Mn1-xZnxO3",

abstract = "We have studied the magnetic dilution and electronic nature of Zn doping on the Mn site in the colossal magnetoresistant material La0.7Pb0.3MnO3 (x ≤ 0.3). Small non-magnetic Zn2+ doping tends to separate the system into ferromagnetic clusters to weaken the long-range ferromagnetic order and to reduce the Curie temperature. The spin polarizability of the x = 0-0.3 samples is estimated to be 0.97-1.00, indicating that the x = 0-0.3 samples are the spin polarized materials in which the conductivity is dominated by single-spin charge carriers. Small doping (x ≥ 0.1) induces the metal-insulator transition and destroys the metallic state with long-range ferromagnetic order.",

keywords = "A. Magnetic materials, C. Photoelectron spectroscopy, D. Magnetic properties, D. Transport properties",

author = "Tadahiko Kanoh and Masanori Matoba",

note = "Funding Information: We would like to thank Prof. T. Sato and Prof. E. Ohta (Keio University) for valuable discussions. M.M. is indebted to Prof. G.A. Sawatzky (University of Groningen) for his helpful advices during the stay in his laboratory. The work was supported by the Applied Physics and Physico-Informatics Foundation of Keio University. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; Proceedings of the 8th ISSP International Symposium ; Conference date: 02-11-2001 Through 05-11-2001",

year = "2002",

month = jun,

doi = "10.1016/S0022-3697(02)00101-4",

language = "English",

volume = "63",

pages = "935--937",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Limited",

number = "6-8",

}

TY - JOUR

T1 - Magnetic dilution and electronic nature in La0.7Pb0.3Mn1-xZnxO3

AU - Kanoh, Tadahiko

AU - Matoba, Masanori

N1 - Funding Information: We would like to thank Prof. T. Sato and Prof. E. Ohta (Keio University) for valuable discussions. M.M. is indebted to Prof. G.A. Sawatzky (University of Groningen) for his helpful advices during the stay in his laboratory. The work was supported by the Applied Physics and Physico-Informatics Foundation of Keio University. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2002/6

Y1 - 2002/6

N2 - We have studied the magnetic dilution and electronic nature of Zn doping on the Mn site in the colossal magnetoresistant material La0.7Pb0.3MnO3 (x ≤ 0.3). Small non-magnetic Zn2+ doping tends to separate the system into ferromagnetic clusters to weaken the long-range ferromagnetic order and to reduce the Curie temperature. The spin polarizability of the x = 0-0.3 samples is estimated to be 0.97-1.00, indicating that the x = 0-0.3 samples are the spin polarized materials in which the conductivity is dominated by single-spin charge carriers. Small doping (x ≥ 0.1) induces the metal-insulator transition and destroys the metallic state with long-range ferromagnetic order.

AB - We have studied the magnetic dilution and electronic nature of Zn doping on the Mn site in the colossal magnetoresistant material La0.7Pb0.3MnO3 (x ≤ 0.3). Small non-magnetic Zn2+ doping tends to separate the system into ferromagnetic clusters to weaken the long-range ferromagnetic order and to reduce the Curie temperature. The spin polarizability of the x = 0-0.3 samples is estimated to be 0.97-1.00, indicating that the x = 0-0.3 samples are the spin polarized materials in which the conductivity is dominated by single-spin charge carriers. Small doping (x ≥ 0.1) induces the metal-insulator transition and destroys the metallic state with long-range ferromagnetic order.

KW - A. Magnetic materials

KW - C. Photoelectron spectroscopy

KW - D. Magnetic properties

KW - D. Transport properties

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U2 - 10.1016/S0022-3697(02)00101-4

DO - 10.1016/S0022-3697(02)00101-4

M3 - Conference article

AN - SCOPUS:0036601686

SN - 0022-3697

VL - 63

SP - 935

EP - 937

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 6-8

T2 - Proceedings of the 8th ISSP International Symposium

Y2 - 2 November 2001 through 5 November 2001

ER -