Structure evolution of Yb substituted PCMO manganites

null Anupama; Anita D. Souza; Mamatha D. Daivajna

doi:10.1016/j.matpr.2020.11.773

Structure evolution of Yb substituted PCMO manganites

Anupama, Anita D. Souza, Mamatha D. Daivajna^*

^*Corresponding author for this work

Department of Physics, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Conference article › peer-review

Abstract

In the present investigation, we have made an effort to synthesize and study the structure of Yb substituted Pr_0.67-_xYb_xCa_0.33MnO₃(PYCMO) [x=0.0, 0.09, 0.2, 0.4 and 0.6] manganites. The tolerance factor estimated decreases while the A-site variance increases with an increase in Yb concentration. This gives an insight of the impact of Yb on the structure of the system. Detailed Rietveld analysis of the X-ray diffraction pattern suggests the structural changes to be temperature sensitive and a mixed-phase is found to evolve as the concentration of Yb increases. The parasitic secondary phase has been identified as YbMnO₃(YMO) which crystallizes in hexagonal structure. A strong immiscibility of the orthorhombic and hexagonal phases has been evident from the two-phase Rietveld analysis.

Original language	English
Pages (from-to)	641-646
Number of pages	6
Journal	Materials Today: Proceedings
Volume	47
DOIs	https://doi.org/10.1016/j.matpr.2020.11.773
Publication status	Published - 2020
Event	2020 Recent Advancements in Materials Science and Nanotechnology, RAMAN 2020 - Gujurat, India Duration: 26-03-2020 → 27-03-2020

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1016/j.matpr.2020.11.773

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title = "Structure evolution of Yb substituted PCMO manganites",

abstract = "In the present investigation, we have made an effort to synthesize and study the structure of Yb substituted Pr0.67-xYbxCa0.33MnO3(PYCMO) [x=0.0, 0.09, 0.2, 0.4 and 0.6] manganites. The tolerance factor estimated decreases while the A-site variance increases with an increase in Yb concentration. This gives an insight of the impact of Yb on the structure of the system. Detailed Rietveld analysis of the X-ray diffraction pattern suggests the structural changes to be temperature sensitive and a mixed-phase is found to evolve as the concentration of Yb increases. The parasitic secondary phase has been identified as YbMnO3(YMO) which crystallizes in hexagonal structure. A strong immiscibility of the orthorhombic and hexagonal phases has been evident from the two-phase Rietveld analysis.",

author = "Anupama and Souza, {Anita D.} and Daivajna, {Mamatha D.}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd. All rights reserved.; 2020 Recent Advancements in Materials Science and Nanotechnology, RAMAN 2020 ; Conference date: 26-03-2020 Through 27-03-2020",

year = "2020",

doi = "10.1016/j.matpr.2020.11.773",

language = "English",

volume = "47",

pages = "641--646",

journal = "Materials Today: Proceedings",

issn = "2214-7853",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Structure evolution of Yb substituted PCMO manganites

AU - Anupama, null

AU - Souza, Anita D.

AU - Daivajna, Mamatha D.

PY - 2020

Y1 - 2020

N2 - In the present investigation, we have made an effort to synthesize and study the structure of Yb substituted Pr0.67-xYbxCa0.33MnO3(PYCMO) [x=0.0, 0.09, 0.2, 0.4 and 0.6] manganites. The tolerance factor estimated decreases while the A-site variance increases with an increase in Yb concentration. This gives an insight of the impact of Yb on the structure of the system. Detailed Rietveld analysis of the X-ray diffraction pattern suggests the structural changes to be temperature sensitive and a mixed-phase is found to evolve as the concentration of Yb increases. The parasitic secondary phase has been identified as YbMnO3(YMO) which crystallizes in hexagonal structure. A strong immiscibility of the orthorhombic and hexagonal phases has been evident from the two-phase Rietveld analysis.

AB - In the present investigation, we have made an effort to synthesize and study the structure of Yb substituted Pr0.67-xYbxCa0.33MnO3(PYCMO) [x=0.0, 0.09, 0.2, 0.4 and 0.6] manganites. The tolerance factor estimated decreases while the A-site variance increases with an increase in Yb concentration. This gives an insight of the impact of Yb on the structure of the system. Detailed Rietveld analysis of the X-ray diffraction pattern suggests the structural changes to be temperature sensitive and a mixed-phase is found to evolve as the concentration of Yb increases. The parasitic secondary phase has been identified as YbMnO3(YMO) which crystallizes in hexagonal structure. A strong immiscibility of the orthorhombic and hexagonal phases has been evident from the two-phase Rietveld analysis.

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DO - 10.1016/j.matpr.2020.11.773

M3 - Conference article

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SN - 2214-7853

VL - 47

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JO - Materials Today: Proceedings

JF - Materials Today: Proceedings

T2 - 2020 Recent Advancements in Materials Science and Nanotechnology, RAMAN 2020

Y2 - 26 March 2020 through 27 March 2020

ER -

Structure evolution of Yb substituted PCMO manganites

Abstract

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