Structural and vibrational properties of phase-pure monoclinic NdLuO3 interlanthanides synthesized from nanostructured precursors

JOURNAL OF ALLOYS AND COMPOUNDS

卷:678

Article

Soares, Julia C.¹  Siqueira, Kisla P. F.¹  Moreira, Roberto L.²  Dias, Anderson¹ 

[1] Univ Fed Ouro Preto, Dept Quim, Campus Morro Cruzeiro,ICEB 2, BR-35400000 Ouro Preto, MG, Brazil

[2] Univ Fed Minas Gerais, Dept Fis, ICEx, CP 702, BR-30123970 Belo Horizonte, MG, Brazil

关键词: Ceramics;    Electron microscopy;    Nanomaterials;    Raman spectroscopy;    Rare-earth;   

DOI  :  10.1016/j.jallcom.2016.03.291

来源: Elsevier

【 摘 要 】

Phase-pure monoclinic NdLuO3 interlanthanides were successfully synthesized from hydrothermal-derived precursors. LuO(OH) and Nd(OH)(3) materials were firstly obtained by hydrothermal synthesis at 250 degrees C, for 24 h. X-ray diffraction, micro-Raman spectroscopy, scanning and transmission electron microscopies were employed to investigate the thermal behavior of these precursors and NdLuO3 interlanthanide up to 1600 degrees C. It was observed that LuO(OH) and Nd(OH)(3) were converted to cubic lanthanide oxides below 1000 degrees C. Cubic Nd2O3 has changed to the monoclinic structure at 1000 degrees C, followed by reaction with cubic Lu2O3 at 1400 degrees C to produce monoclinic NdLuO3. Phase-pure monoclinic (C2/m space group, #12) interlanthanide was then produced at 1600 degrees C for the first time, as confirmed by all the employed techniques. Phonon modes were additionally determined and assigned for this monoclinic structure. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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