Phase stability study of the pseudobinary system Gd2O 3-Nd2O3 (T1350°C)

G. A. Costa; C. Artini; A. Ubaldini; M. M. Carnasciali; P. Mele; R. Masini

doi:10.1007/s10973-007-8744-x

Phase stability study of the pseudobinary system Gd₂O ₃-Nd₂O₃ (T1350°C)

G. A. Costa, C. Artini, A. Ubaldini, M. M. Carnasciali, P. Mele, R. Masini

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

24 Citations (Scopus)

Abstract

The phase stability of the system Gd₂O₃-Nd ₂O₃ up to 1350°C was studied. Mixed oxides were synthesized by coprecipitation of mixed oxalates. Depending on the thermal treatment, three possible structures of the oxides, namely the A (hexagonal, P6₃/mmm), B (monoclinic, C2/m) and C (cubic, Ia3) forms, were obtained. Below 1300°C the system Gd₂O₃-Nd ₂O₃ shows three monophasic (A, B and C phase) and three biphasic regions (A+B, B+C and A+C phase). Below 550°C the C phase is stable over the whole composition range. A validation procedure for the existence of the C phase in pure Nd₂O₃ was also set up.

Original language	English
Pages (from-to)	101-104
Number of pages	4
Journal	Journal of Thermal Analysis and Calorimetry
Volume	92
Issue number	1
DOIs	https://doi.org/10.1007/s10973-007-8744-x
Publication status	Published - 2008 Apr
Externally published	Yes

Keywords

Phase stability
Rare earth sesquioxides
X-ray diffraction

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry

Access to Document

10.1007/s10973-007-8744-x

Cite this

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title = "Phase stability study of the pseudobinary system Gd2O 3-Nd2O3 (T1350°C)",

abstract = "The phase stability of the system Gd2O3-Nd 2O3 up to 1350°C was studied. Mixed oxides were synthesized by coprecipitation of mixed oxalates. Depending on the thermal treatment, three possible structures of the oxides, namely the A (hexagonal, P63/mmm), B (monoclinic, C2/m) and C (cubic, Ia3) forms, were obtained. Below 1300°C the system Gd2O3-Nd 2O3 shows three monophasic (A, B and C phase) and three biphasic regions (A+B, B+C and A+C phase). Below 550°C the C phase is stable over the whole composition range. A validation procedure for the existence of the C phase in pure Nd2O3 was also set up.",

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author = "Costa, {G. A.} and C. Artini and A. Ubaldini and Carnasciali, {M. M.} and P. Mele and R. Masini",

year = "2008",

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AU - Costa, G. A.

AU - Artini, C.

AU - Ubaldini, A.

AU - Carnasciali, M. M.

AU - Mele, P.

AU - Masini, R.

PY - 2008/4

Y1 - 2008/4

N2 - The phase stability of the system Gd2O3-Nd 2O3 up to 1350°C was studied. Mixed oxides were synthesized by coprecipitation of mixed oxalates. Depending on the thermal treatment, three possible structures of the oxides, namely the A (hexagonal, P63/mmm), B (monoclinic, C2/m) and C (cubic, Ia3) forms, were obtained. Below 1300°C the system Gd2O3-Nd 2O3 shows three monophasic (A, B and C phase) and three biphasic regions (A+B, B+C and A+C phase). Below 550°C the C phase is stable over the whole composition range. A validation procedure for the existence of the C phase in pure Nd2O3 was also set up.

AB - The phase stability of the system Gd2O3-Nd 2O3 up to 1350°C was studied. Mixed oxides were synthesized by coprecipitation of mixed oxalates. Depending on the thermal treatment, three possible structures of the oxides, namely the A (hexagonal, P63/mmm), B (monoclinic, C2/m) and C (cubic, Ia3) forms, were obtained. Below 1300°C the system Gd2O3-Nd 2O3 shows three monophasic (A, B and C phase) and three biphasic regions (A+B, B+C and A+C phase). Below 550°C the C phase is stable over the whole composition range. A validation procedure for the existence of the C phase in pure Nd2O3 was also set up.

KW - Phase stability

KW - Rare earth sesquioxides

KW - X-ray diffraction

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