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

^*Corresponding author for this work

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

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

10 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	60-63
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	460
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2007.06.028
State	Published - 28 Jul 2008
Externally published	Yes

Keywords

Electrical transport
LaCaMnO films
Magnetoresistance
Nanostructured networks

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10.1016/j.jallcom.2007.06.028

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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 La_0.67Ca_0.33MnO₃ networks

Abstract

Keywords

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