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Fizika Tverdogo Tela, 2020, Volume 62, Issue 5, Page 799 (Mi ftt10192)  

This article is cited in 1 scientific paper (total in 1 paper)

Magnetism

Structural, magnetic, and magneto-caloric properties of Cu-substituted Nd$_{0.67}$Ba$_{0.33}$MnO$_3$ manganites

B. Sudakshinaab, B. Arunab, M. Vasundharaab

a Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum-695 019, India
b Academy of Scientific and Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, India
Full-text PDF (31 kB) Citations (1)
Abstract: The crystal structure and magnetic properties of polycrystalline Nd$_{0.67}$Ba$_{0.33}$Mn$_{1-x}$Cu$_x$O$_3$($x$ = 0.00, 0.02, 0.04, 0.06, 0.08, and 0.10) manganites are discussed. All the samples are crystallized into an orthorhombic crystal structure with Imma symmetry space group and the obtained lattice parameters confirm the presence of a co-operative Jahn–Teller effect for all the studied compounds. X-ray photoelectron spectra suggest the ratio of Mn$^{3+}$/Mn$^{4+}$ ions are observed to be decreasing systematically with the increase of Cu-content substitution and affects the Cu-ions oxidations states. The ferromagnetic (FM) to paramagnetic (PM) transition and magnetic moment is found to decrease systematically with the increase of Cu-content substitution leading to the suppression of double-exchange interactions. The theoretical and experimentally observed values of effective PM moment and saturation magnetic moment confirm the presence of inhomogeneous magnetic states containing FM and antiferromagnetic phases in all the samples. A magnetic phase change, i. e., from second-order transition to first-order transition is witnessed in between the 4 to 6 at.% of the Cu substitution in Nd$_{0.67}$Ba$_{0.33}$MnO$_3$ mixed-valence manganite.
Keywords: mixed-valence manganites, magnetic properties, X-ray photoelectron spectroscopy, magneto-caloric effect, Nd-based manganites, Jahn–Teller effect.
Funding agency Grant number
Council of Scientific and Industrial Research (CSIR), India MLP0031
Department of Science and Technology, India GAP232339
The authors would like to acknowledge the financial support received from the Council of Scientific and Industrial Research (CSIR), Government of India, sponsored project MLP0031, and Department of Science and Technology, sponsored project no. GAP232339.
Received: 12.12.2019
Revised: 12.12.2019
Accepted: 16.12.2019
English version:
Physics of the Solid State, 2020, Volume 62, Issue 5, Pages 902–911
DOI: https://doi.org/10.1134/S1063783420050297
Document Type: Article
Language: English
Citation: B. Sudakshina, B. Arun, M. Vasundhara, “Structural, magnetic, and magneto-caloric properties of Cu-substituted Nd$_{0.67}$Ba$_{0.33}$MnO$_3$ manganites”, Fizika Tverdogo Tela, 62:5 (2020), 799; Phys. Solid State, 62:5 (2020), 902–911
Citation in format AMSBIB
\Bibitem{SudAruVas20}
\by B.~Sudakshina, B.~Arun, M.~Vasundhara
\paper Structural, magnetic, and magneto-caloric properties of Cu-substituted Nd$_{0.67}$Ba$_{0.33}$MnO$_3$ manganites
\jour Fizika Tverdogo Tela
\yr 2020
\vol 62
\issue 5
\pages 799
\mathnet{http://mi.mathnet.ru/ftt10192}
\transl
\jour Phys. Solid State
\yr 2020
\vol 62
\issue 5
\pages 902--911
\crossref{https://doi.org/10.1134/S1063783420050297}
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