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Phase stability study of the pseudobinary system Gd2O3-Nd2O3 (T≙1350°C)

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Abstract

The phase stability of the system Gd2O3-Nd2O3 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-Nd2O3 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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Authors and Affiliations

  1. DCCI & LAMIA-INFM-CNR, Via Dodecaneso 31, 16146, Genova, Italy

    G. A. Costa & C. Artini

  2. NIMS, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan

    A. Ubaldini

  3. DCCI & INSTM, Via Dodecaneso 31, 16146, Genova, Italy

    M. M. Carnasciali

  4. Department of Materials Science, Kyushu Institute of Technology, Kitakyushu, 804-8550, Japan

    P. Mele

  5. CNR-IMEM, Via Dodecaneso 33, 16146, Genova, Italy

    R. Masini

Authors
  1. G. A. Costa
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  2. C. Artini
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  3. A. Ubaldini
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  4. M. M. Carnasciali
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  5. P. Mele
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  6. R. Masini
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Correspondence to G. A. Costa.

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Costa, G.A., Artini, C., Ubaldini, A. et al. Phase stability study of the pseudobinary system Gd2O3-Nd2O3 (T≙1350°C). J Therm Anal Calorim 92, 101–104 (2008). https://doi.org/10.1007/s10973-007-8744-x

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  • DOI: https://doi.org/10.1007/s10973-007-8744-x

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