Phase relations and electrical conductivities in the Nd-Ce-Cu-O system
Publication type: Journal Article
Publication date: 1991-08-01
General Engineering
Abstract
A systematic study by means of X-ray diffraction, differential thermal analysis coupled with thermogravimetry, scanning electron microscopy-energy-dispersive X-ray probe and high temperature resistivity of samples of the Nd-Ce-Cu-O system allowed us to determine precise phase relations in the binary NdO1.5-CuO and CeO2-CuO and ternary NdO1.5-CeO2-CuO systems. The ability of cerium to form mixed valence compounds, complemented by the reaction 2CuO → Cu 2 O + 1 2 O 2 , introduces an additional difficulty for the preparation or the high temperature heat treatment of well-defined samples. In cerium-doped specimens (Nd1−xCex)2CuO4−δ the limit of solubility was found to be x = 0.08. The solid solution is formed by non-congruent reaction at 1285 °C from an Nd2O3 + CeO2 + liquid mixture. We argue that a long-range ordering may influence the electronic properties at low temperature, especially the superconductivity.
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Total citations:
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Citations from 2024:
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(5.26%)
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Jorda J. L., Cohen Adad M. T. S. Phase relations and electrical conductivities in the Nd-Ce-Cu-O system // Journal of the Less Common Metals. 1991. Vol. 171. No. 1. pp. 127-147.
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Jorda J. L., Cohen Adad M. T. S. Phase relations and electrical conductivities in the Nd-Ce-Cu-O system // Journal of the Less Common Metals. 1991. Vol. 171. No. 1. pp. 127-147.
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TY - JOUR
DO - 10.1016/0022-5088(91)90270-e
UR - https://doi.org/10.1016/0022-5088(91)90270-e
TI - Phase relations and electrical conductivities in the Nd-Ce-Cu-O system
T2 - Journal of the Less Common Metals
AU - Jorda, J. L.
AU - Cohen Adad, M Th Saugier
PY - 1991
DA - 1991/08/01
PB - Elsevier
SP - 127-147
IS - 1
VL - 171
SN - 0022-5088
ER -
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BibTex (up to 50 authors)
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@article{1991_Jorda,
author = {J. L. Jorda and M Th Saugier Cohen Adad},
title = {Phase relations and electrical conductivities in the Nd-Ce-Cu-O system},
journal = {Journal of the Less Common Metals},
year = {1991},
volume = {171},
publisher = {Elsevier},
month = {aug},
url = {https://doi.org/10.1016/0022-5088(91)90270-e},
number = {1},
pages = {127--147},
doi = {10.1016/0022-5088(91)90270-e}
}
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MLA
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Jorda, J. L., and M Th Saugier Cohen Adad. “Phase relations and electrical conductivities in the Nd-Ce-Cu-O system.” Journal of the Less Common Metals, vol. 171, no. 1, Aug. 1991, pp. 127-147. https://doi.org/10.1016/0022-5088(91)90270-e.