Magnetic and electrical transport properties of nanostructured La0.67Ca0.33MnO3 networks

P. G. Li; M. Lei; H. Yang; H. L. Tang; Y. F. Guo; W. H. Tang

doi:10.1016/j.jallcom.2007.06.028

Magnetic and electrical transport properties of nanostructured La_0.67Ca_0.33MnO₃ networks

P. G. Li^*
, M. Lei
, H. Yang
, H. L. Tang
, Y. F. Guo
, W. H. Tang

^*此作品的通讯作者

Zhejiang Sci-Tech University
CAS - Institute of Physics
Wuhan University of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

10 引用（Scopus）

摘要

Contiguously nanostructured networks of La_0.67Ca_0.33MnO₃ (LCMO) are fabricated successfully by pulsed electron deposition (PED) onto the surface of porous anodic alumina oxide (AAO). The Curie temperature (T_C) is about 250 K. The metal-insulator transition temperature (T_p) is about 145 K without the magnetic field. The magnetoresistance can reach 84% near the peak temperature, which suggesting a strong magnetic correlated electronic transportation process. Zero field cooling (ZFC) and field cooling (FC) are split below the paramagnetic-ferromagnetic transition. The ZFC curves exhibit a typical blocking process. The observed spin glass and weak localization phenomena are due to the size effect, and it is found that the resistance dependent temperature curve above metal-insulator transition temperature (T_p) is more suitable to small polaron hopping (SPH) model.

源语言	英语
页（从-至）	60-63
页数	4
期刊	Journal of Alloys and Compounds
卷	460
期	1-2
DOI	https://doi.org/10.1016/j.jallcom.2007.06.028
出版状态	已出版 - 28 7月 2008
已对外发布	是

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@article{6a80044197eb4814909badc779912be5,

title = "Magnetic and electrical transport properties of nanostructured La0.67Ca0.33MnO3 networks",

abstract = "Contiguously nanostructured networks of La0.67Ca0.33MnO3 (LCMO) are fabricated successfully by pulsed electron deposition (PED) onto the surface of porous anodic alumina oxide (AAO). The Curie temperature (TC) is about 250 K. The metal-insulator transition temperature (Tp) is about 145 K without the magnetic field. The magnetoresistance can reach 84\% near the peak temperature, which suggesting a strong magnetic correlated electronic transportation process. Zero field cooling (ZFC) and field cooling (FC) are split below the paramagnetic-ferromagnetic transition. The ZFC curves exhibit a typical blocking process. The observed spin glass and weak localization phenomena are due to the size effect, and it is found that the resistance dependent temperature curve above metal-insulator transition temperature (Tp) is more suitable to small polaron hopping (SPH) model.",

keywords = "Electrical transport, LaCaMnO films, Magnetoresistance, Nanostructured networks",

author = "Li, \{P. G.\} and M. Lei and H. Yang and Tang, \{H. L.\} and Guo, \{Y. F.\} and Tang, \{W. H.\}",

year = "2008",

month = jul,

day = "28",

doi = "10.1016/j.jallcom.2007.06.028",

language = "英语",

volume = "460",

pages = "60--63",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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}

TY - JOUR

T1 - Magnetic and electrical transport properties of nanostructured La0.67Ca0.33MnO3 networks

AU - Li, P. G.

AU - Lei, M.

AU - Yang, H.

AU - Tang, H. L.

AU - Guo, Y. F.

AU - Tang, W. H.

PY - 2008/7/28

Y1 - 2008/7/28

N2 - Contiguously nanostructured networks of La0.67Ca0.33MnO3 (LCMO) are fabricated successfully by pulsed electron deposition (PED) onto the surface of porous anodic alumina oxide (AAO). The Curie temperature (TC) is about 250 K. The metal-insulator transition temperature (Tp) is about 145 K without the magnetic field. The magnetoresistance can reach 84% near the peak temperature, which suggesting a strong magnetic correlated electronic transportation process. Zero field cooling (ZFC) and field cooling (FC) are split below the paramagnetic-ferromagnetic transition. The ZFC curves exhibit a typical blocking process. The observed spin glass and weak localization phenomena are due to the size effect, and it is found that the resistance dependent temperature curve above metal-insulator transition temperature (Tp) is more suitable to small polaron hopping (SPH) model.

AB - Contiguously nanostructured networks of La0.67Ca0.33MnO3 (LCMO) are fabricated successfully by pulsed electron deposition (PED) onto the surface of porous anodic alumina oxide (AAO). The Curie temperature (TC) is about 250 K. The metal-insulator transition temperature (Tp) is about 145 K without the magnetic field. The magnetoresistance can reach 84% near the peak temperature, which suggesting a strong magnetic correlated electronic transportation process. Zero field cooling (ZFC) and field cooling (FC) are split below the paramagnetic-ferromagnetic transition. The ZFC curves exhibit a typical blocking process. The observed spin glass and weak localization phenomena are due to the size effect, and it is found that the resistance dependent temperature curve above metal-insulator transition temperature (Tp) is more suitable to small polaron hopping (SPH) model.

KW - Electrical transport

KW - LaCaMnO films

KW - Magnetoresistance

KW - Nanostructured networks

UR - https://www.scopus.com/pages/publications/44449088341

U2 - 10.1016/j.jallcom.2007.06.028

DO - 10.1016/j.jallcom.2007.06.028

M3 - 文章

AN - SCOPUS:44449088341

SN - 0925-8388

VL - 460

SP - 60

EP - 63

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Magnetic and electrical transport properties of nanostructured La0.67Ca0.33MnO3 networks

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Magnetic and electrical transport properties of nanostructured La_0.67Ca_0.33MnO₃ networks