Strain control of Urbach energy in Cr-doped PrFeO3

Anil Kumar; M. Kamal Warshi; Vikash Mishra; Shailendra K. Saxena; Rajesh Kumar; Pankaj R. Sagdeo

doi:10.1007/s00339-017-1186-9

Strain control of Urbach energy in Cr-doped PrFeO₃

Anil Kumar
, M. Kamal Warshi
, Vikash Mishra
, Shailendra K. Saxena
, Rajesh Kumar
, Pankaj R. Sagdeo^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

Polycrystalline samples of PrFe_1−xCr_xO₃ having average particle size of ~90 nm have been prepared by wet chemical route. The structural phase purity of the prepared samples is confirmed by powder X-ray diffraction followed by Rietveld refinements. It is observed that with Cr doping, the Urbach energy (E_u) increases. The E_u is measure of the various disorders present in the sample, such as chemical and structural. To understand the contribution to the E_u due to chemical and structural disorders, we have probed the chemical and structural disorders in the samples by elemental mappings and through X-ray diffraction experiments, respectively. Elemental mapping confirms chemical homogeneity of prepared samples. It is observed that with Cr doping the crystallographic strain increases and Urbach energy shows the similar scaling.

Original language	English
Article number	576
Journal	Applied Physics A: Materials Science and Processing
Volume	123
Issue number	9
DOIs	https://doi.org/10.1007/s00339-017-1186-9
Publication status	Published - 01-09-2017

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science

Access to Document

10.1007/s00339-017-1186-9

Cite this

@article{3939b500cff44a688af2807a96b0ddcb,

title = "Strain control of Urbach energy in Cr-doped PrFeO3",

abstract = "Polycrystalline samples of PrFe1−xCrxO3 having average particle size of \textasciitilde{}90 nm have been prepared by wet chemical route. The structural phase purity of the prepared samples is confirmed by powder X-ray diffraction followed by Rietveld refinements. It is observed that with Cr doping, the Urbach energy (Eu) increases. The Eu is measure of the various disorders present in the sample, such as chemical and structural. To understand the contribution to the Eu due to chemical and structural disorders, we have probed the chemical and structural disorders in the samples by elemental mappings and through X-ray diffraction experiments, respectively. Elemental mapping confirms chemical homogeneity of prepared samples. It is observed that with Cr doping the crystallographic strain increases and Urbach energy shows the similar scaling.",

author = "Anil Kumar and Warshi, \{M. Kamal\} and Vikash Mishra and Saxena, \{Shailendra K.\} and Rajesh Kumar and Sagdeo, \{Pankaj R.\}",

note = "Publisher Copyright: {\textcopyright} 2017, Springer-Verlag GmbH Germany.",

year = "2017",

month = sep,

day = "1",

doi = "10.1007/s00339-017-1186-9",

language = "English",

volume = "123",

journal = "Applied Physics A: Materials Science and Processing",

issn = "0947-8396",

number = "9",

}

TY - JOUR

T1 - Strain control of Urbach energy in Cr-doped PrFeO3

AU - Kumar, Anil

AU - Warshi, M. Kamal

AU - Mishra, Vikash

AU - Saxena, Shailendra K.

AU - Kumar, Rajesh

AU - Sagdeo, Pankaj R.

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Polycrystalline samples of PrFe1−xCrxO3 having average particle size of ~90 nm have been prepared by wet chemical route. The structural phase purity of the prepared samples is confirmed by powder X-ray diffraction followed by Rietveld refinements. It is observed that with Cr doping, the Urbach energy (Eu) increases. The Eu is measure of the various disorders present in the sample, such as chemical and structural. To understand the contribution to the Eu due to chemical and structural disorders, we have probed the chemical and structural disorders in the samples by elemental mappings and through X-ray diffraction experiments, respectively. Elemental mapping confirms chemical homogeneity of prepared samples. It is observed that with Cr doping the crystallographic strain increases and Urbach energy shows the similar scaling.

AB - Polycrystalline samples of PrFe1−xCrxO3 having average particle size of ~90 nm have been prepared by wet chemical route. The structural phase purity of the prepared samples is confirmed by powder X-ray diffraction followed by Rietveld refinements. It is observed that with Cr doping, the Urbach energy (Eu) increases. The Eu is measure of the various disorders present in the sample, such as chemical and structural. To understand the contribution to the Eu due to chemical and structural disorders, we have probed the chemical and structural disorders in the samples by elemental mappings and through X-ray diffraction experiments, respectively. Elemental mapping confirms chemical homogeneity of prepared samples. It is observed that with Cr doping the crystallographic strain increases and Urbach energy shows the similar scaling.

UR - https://www.scopus.com/pages/publications/85027686736

UR - https://www.scopus.com/pages/publications/85027686736#tab=citedBy

U2 - 10.1007/s00339-017-1186-9

DO - 10.1007/s00339-017-1186-9

M3 - Article

AN - SCOPUS:85027686736

SN - 0947-8396

VL - 123

JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 9

M1 - 576

ER -

Strain control of Urbach energy in Cr-doped PrFeO₃

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this