Electronic transport and magnetic properties in (La1-xGdx)0.67 Ca0.33MnOδ perovskites

Jianhua Hao; Z. S. Li; H. K. Wong

doi:10.1016/S0921-5107(00)00805-9

Electronic transport and magnetic properties in (La1-xGdx)0.67 Ca0.33MnOδ perovskites

Jianhua Hao, Z. S. Li, H. K. Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

8 Citations (Scopus)

Abstract

Polycrystalline samples of La-Ca-Mn-O doped with Gd have been prepared. We have systematically examined their electronic transport, low-field magnetoresistance, and magnetization behaviors in a series of (La1-xGdx)0.67Ca0.33MnOδwith 0.10 ≤ x ≤ 1.00. The maximum magnetoresistance ratio at B = 0.85 T with (R0-RB)/R0= 92.5% occurs approximately at x = 0.3. It is also found that the Gd-doped samples show a novel memory effect. The effects of gadolinium ion composition on the electric and magnetoresistance behaviors of manganese perovskites (La1-xGdx)0.67Ca0.33MnOδcould arise as from changes in the average ionic radius of the La site 〈rA〉.

Original language	English
Pages (from-to)	70-73
Number of pages	4
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	83
Issue number	1-3
DOIs	https://doi.org/10.1016/S0921-5107(00)00805-9
Publication status	Published - 21 Jun 2001
Externally published	Yes

Keywords

Colossal magnetoresistance
Magnetic
Manganese perovskite
Memory effect
Transport

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Materials Science
Condensed Matter Physics

More information

10.1016/S0921-5107(00)00805-9

Cite this

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title = "Electronic transport and magnetic properties in (La1-xGdx)0.67 Ca0.33MnOδ perovskites",

abstract = "Polycrystalline samples of La-Ca-Mn-O doped with Gd have been prepared. We have systematically examined their electronic transport, low-field magnetoresistance, and magnetization behaviors in a series of (La1-xGdx)0.67Ca0.33MnOδwith 0.10 ≤ x ≤ 1.00. The maximum magnetoresistance ratio at B = 0.85 T with (R0-RB)/R0= 92.5% occurs approximately at x = 0.3. It is also found that the Gd-doped samples show a novel memory effect. The effects of gadolinium ion composition on the electric and magnetoresistance behaviors of manganese perovskites (La1-xGdx)0.67Ca0.33MnOδcould arise as from changes in the average ionic radius of the La site 〈rA〉.",

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author = "Jianhua Hao and Li, {Z. S.} and Wong, {H. K.}",

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T1 - Electronic transport and magnetic properties in (La1-xGdx)0.67 Ca0.33MnOδ perovskites

AU - Hao, Jianhua

AU - Li, Z. S.

AU - Wong, H. K.

PY - 2001/6/21

Y1 - 2001/6/21

N2 - Polycrystalline samples of La-Ca-Mn-O doped with Gd have been prepared. We have systematically examined their electronic transport, low-field magnetoresistance, and magnetization behaviors in a series of (La1-xGdx)0.67Ca0.33MnOδwith 0.10 ≤ x ≤ 1.00. The maximum magnetoresistance ratio at B = 0.85 T with (R0-RB)/R0= 92.5% occurs approximately at x = 0.3. It is also found that the Gd-doped samples show a novel memory effect. The effects of gadolinium ion composition on the electric and magnetoresistance behaviors of manganese perovskites (La1-xGdx)0.67Ca0.33MnOδcould arise as from changes in the average ionic radius of the La site 〈rA〉.

AB - Polycrystalline samples of La-Ca-Mn-O doped with Gd have been prepared. We have systematically examined their electronic transport, low-field magnetoresistance, and magnetization behaviors in a series of (La1-xGdx)0.67Ca0.33MnOδwith 0.10 ≤ x ≤ 1.00. The maximum magnetoresistance ratio at B = 0.85 T with (R0-RB)/R0= 92.5% occurs approximately at x = 0.3. It is also found that the Gd-doped samples show a novel memory effect. The effects of gadolinium ion composition on the electric and magnetoresistance behaviors of manganese perovskites (La1-xGdx)0.67Ca0.33MnOδcould arise as from changes in the average ionic radius of the La site 〈rA〉.

KW - Colossal magnetoresistance

KW - Magnetic

KW - Manganese perovskite

KW - Memory effect

KW - Transport

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VL - 83

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EP - 73

JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

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Electronic transport and magnetic properties in (La1-xGdx)0.67 Ca0.33MnOδ perovskites

Abstract

Keywords

ASJC Scopus subject areas

More information

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