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 publicationJournal articleAcademic researchpeer-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 languageEnglish
Pages (from-to)70-73
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume83
Issue number1-3
DOIs
Publication statusPublished - 21 Jun 2001
Externally publishedYes

Keywords

  • Colossal magnetoresistance
  • Magnetic
  • Manganese perovskite
  • Memory effect
  • Transport

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Condensed Matter Physics

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