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

doi:10.1016/j.solidstatesciences.2017.03.003

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 journal › Article › peer-review

13 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 language	English
Pages (from-to)	8-12
Number of pages	5
Journal	Solid State Sciences
Volume	67
DOIs	https://doi.org/10.1016/j.solidstatesciences.2017.03.003
Publication status	Published - 1 May 2017
Externally published	Yes

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

Access to Document

10.1016/j.solidstatesciences.2017.03.003

Cite this

@article{ca81fab843114946b0c4f954968878c0,

title = "Investigations on structural and magnetic properties of Mn doped Er2O3",

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.",

keywords = "EPR measurements, Raman and photoluminescence spectroscopy, Rare earth oxides (ErO), Transition metal doping",

author = "Renu Tomar and Parmod Kumar and Ashish Kumar and Ashok Kumar and Pawan Kumar and Pant, {R. P.} and K. Asokan",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Masson SAS",

year = "2017",

month = may,

day = "1",

doi = "10.1016/j.solidstatesciences.2017.03.003",

language = "English",

volume = "67",

pages = "8--12",

journal = "Solid State Sciences",

issn = "1293-2558",

publisher = "Elsevier Masson s.r.l.",

}

TY - JOUR

T1 - Investigations on structural and magnetic properties of Mn doped Er2O3

AU - Tomar, Renu

AU - Kumar, Parmod

AU - Kumar, Ashish

AU - Kumar, Ashok

AU - Kumar, Pawan

AU - Pant, R. P.

AU - Asokan, K.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - 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.

AB - 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.

KW - EPR measurements

KW - Raman and photoluminescence spectroscopy

KW - Rare earth oxides (ErO)

KW - Transition metal doping

UR - http://www.scopus.com/inward/record.url?scp=85015385372&partnerID=8YFLogxK

U2 - 10.1016/j.solidstatesciences.2017.03.003

DO - 10.1016/j.solidstatesciences.2017.03.003

M3 - Article

AN - SCOPUS:85015385372

SN - 1293-2558

VL - 67

SP - 8

EP - 12

JO - Solid State Sciences

JF - Solid State Sciences

ER -