Transport behavior of yttrium substituted polycrystalline La0.7Pb0.3MnO3

C. H. Lin; S. L. Young; H. Z. Chen; C. R. Ou; M. C. Kao; Lance Horng

doi:10.1016/j.jnoncrysol.2008.07.037

Transport behavior of yttrium substituted polycrystalline La_0.7Pb_0.3MnO₃

C. H. Lin, S. L. Young, H. Z. Chen, C. R. Ou, M. C. Kao, Lance Horng

Department of Physics

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

Abstract

The transport properties in La_0.7-xY_xPb_0.3MnO₃ (0.0 ≤ x ≤ 0.2) is investigated. The substitution of La³⁺ ions by smaller nonmagnetic Y³⁺ leads to greater spin disorder and induces variations in the magnetotransport behavior. From resistivity versus temperature curves a metal-insulator transition phenomenon is observed at the transition temperature, T_P, decreases as the Y content increases. The resistivity is well fitted using the equation ρ(T) = ρ_nexp[(T^*/T)ⁿ] with n = 1/4 and n = 1/2 at high and intermediate temperatures, respectively. The characteristic temperature T^* varies with Y content in a manner consistent with the localization model of variable range hopping. Below T_P, resistivity varies as a function of power law contributions, ρ = ρ₀ + ρ₂T² + ρ_5/2T^5/2, corresponding to the electron scattering processes in the ferromagnetic phase.

Original language	English
Pages (from-to)	5290-5291
Number of pages	2
Journal	Journal of Non-Crystalline Solids
Volume	354
Issue number	47-51
DOIs	https://doi.org/10.1016/j.jnoncrysol.2008.07.037
Publication status	Published - 2008 Dec 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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@article{639244988b834465be701818a33278ee,

title = "Transport behavior of yttrium substituted polycrystalline La0.7Pb0.3MnO3",

abstract = "The transport properties in La0.7-xYxPb0.3MnO3 (0.0 ≤ x ≤ 0.2) is investigated. The substitution of La3+ ions by smaller nonmagnetic Y3+ leads to greater spin disorder and induces variations in the magnetotransport behavior. From resistivity versus temperature curves a metal-insulator transition phenomenon is observed at the transition temperature, TP, decreases as the Y content increases. The resistivity is well fitted using the equation ρ(T) = ρnexp[(T*/T)n] with n = 1/4 and n = 1/2 at high and intermediate temperatures, respectively. The characteristic temperature T* varies with Y content in a manner consistent with the localization model of variable range hopping. Below TP, resistivity varies as a function of power law contributions, ρ = ρ0 + ρ2T2 + ρ5/2T5/2, corresponding to the electron scattering processes in the ferromagnetic phase.",

author = "Lin, {C. H.} and Young, {S. L.} and Chen, {H. Z.} and Ou, {C. R.} and Kao, {M. C.} and Lance Horng",

year = "2008",

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doi = "10.1016/j.jnoncrysol.2008.07.037",

language = "English",

volume = "354",

pages = "5290--5291",

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TY - JOUR

T1 - Transport behavior of yttrium substituted polycrystalline La0.7Pb0.3MnO3

AU - Lin, C. H.

AU - Young, S. L.

AU - Chen, H. Z.

AU - Ou, C. R.

AU - Kao, M. C.

AU - Horng, Lance

PY - 2008/12/1

Y1 - 2008/12/1

N2 - The transport properties in La0.7-xYxPb0.3MnO3 (0.0 ≤ x ≤ 0.2) is investigated. The substitution of La3+ ions by smaller nonmagnetic Y3+ leads to greater spin disorder and induces variations in the magnetotransport behavior. From resistivity versus temperature curves a metal-insulator transition phenomenon is observed at the transition temperature, TP, decreases as the Y content increases. The resistivity is well fitted using the equation ρ(T) = ρnexp[(T*/T)n] with n = 1/4 and n = 1/2 at high and intermediate temperatures, respectively. The characteristic temperature T* varies with Y content in a manner consistent with the localization model of variable range hopping. Below TP, resistivity varies as a function of power law contributions, ρ = ρ0 + ρ2T2 + ρ5/2T5/2, corresponding to the electron scattering processes in the ferromagnetic phase.

AB - The transport properties in La0.7-xYxPb0.3MnO3 (0.0 ≤ x ≤ 0.2) is investigated. The substitution of La3+ ions by smaller nonmagnetic Y3+ leads to greater spin disorder and induces variations in the magnetotransport behavior. From resistivity versus temperature curves a metal-insulator transition phenomenon is observed at the transition temperature, TP, decreases as the Y content increases. The resistivity is well fitted using the equation ρ(T) = ρnexp[(T*/T)n] with n = 1/4 and n = 1/2 at high and intermediate temperatures, respectively. The characteristic temperature T* varies with Y content in a manner consistent with the localization model of variable range hopping. Below TP, resistivity varies as a function of power law contributions, ρ = ρ0 + ρ2T2 + ρ5/2T5/2, corresponding to the electron scattering processes in the ferromagnetic phase.

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JO - Journal of Non-Crystalline Solids

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