Investigations on structural and magnetic properties of Mn doped Er2O3

Renu Tomar, Parmod Kumar, Ashish Kumar, Ashok Kumar, Pawan Kumar, R. P. Pant, K. Asokan

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We report the structural, optical and magnetic properties of Mn doped Er2O3 samples. X-ray diffraction study shows that dilute concentration of Mn in Er2O3 lattice leads to change in lattice parameter as well as the crystallite sizes. The change in these parameters is attributed to difference in ionic radii of dopant and host. The changes in particle sizes and surface morphologies were confirmed by scanning electron microscopy and their composition by energy dispersive X-ray measurements. Electron paramagnetic resonance (EPR) studies show that increase in Mn doping causes oxygen vacancies and hence enhancement in magnetization. The intensities of Raman and photoluminescence spectra decreases with Mn concentration inside the host lattice. Further, it is found that photoluminescence bands cover most of the Raman band in the region of 200 cm−1–700 cm−1 when excited by 514 nm laser.

Original languageEnglish
Pages (from-to)8-12
Number of pages5
JournalSolid State Sciences
Volume67
DOIs
Publication statusPublished - 1 May 2017
Externally publishedYes

Keywords

  • EPR measurements
  • Raman and photoluminescence spectroscopy
  • Rare earth oxides (ErO)
  • Transition metal doping

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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