Effect of Chromium Substitution on Microstructure and Magnetic Properties of La0.7Sr0.2Ba0.1Mn1-xCrxO3 (x = 0, 0.03, 0.05, 0.07, 0.1)

Dicky Rezky Munazat, Budhy Kurniawan, Trians Aprilianto, Maykel Manawan

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Structure, morphology, and magnetic properties of perovskite La0.7Sr0.2Ba0.1Mn1-xCrxO3 (x = 0; 0.03; 0.05; 0.07 and 0.1) synthesized via sol-gel method have been studied. X-ray diffraction studies confirm the Rhombohedral structure with R-3c space groups for all samples. The magnetization measurements clearly show that magnetization decreases with increasing Cr substitution concentration. The partial substitution of Cr3+ in the Mn site weakens the ferromagnetic double exchange interaction of the Mn3+–O–Mn4+ bond. It is caused by the emergence of the Cr3+–O–Cr3+ antiferromagnetic interaction. As known, the structural parameters affect the magnetic properties of perovskite manganese materials in the double exchange interaction. As the Cr3+ concentration increases, the average Mn-O bond length also increases, and the average Mn-O-Mn bond angle decreases, which dramatically weakens the Mn3+–O–Mn4+ double exchange interaction.

Original languageEnglish
Title of host publicationSolid State Phenomena
PublisherTrans Tech Publications Ltd
Pages71-75
Number of pages5
DOIs
Publication statusPublished - 2023

Publication series

NameSolid State Phenomena
Volume345
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Keywords

  • Chromium Substitution
  • Double exchange
  • Magnetic properties
  • Perovskite Manganite

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