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Citation: Shi Fanian, Ren Yufang, Meng Jian. Preparation,Structure,Electrical and Magnetic Properties of Ln₂Mo₃O₉[J]. Chinese Journal of Applied Chemistry, ;1995, 12(2): 95-97. shu

Preparation,Structure,Electrical and Magnetic Properties of Ln₂Mo₃O₉

Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry Chinese Acadelmy of Sciences, Changchun 130022

Received Date: 23 October 1994
Revised Date: 1 January 1995

The molybdenum(Ⅳ) oxides of formula Ln₂Mo₃O₉ were obtained by reduction of α-Ln₂Mo₃O₁₂(Ln=La,Pr,Nd, Sm,Gd,Dy) as well as Ce₂Mo₃O_12.25 in hydrogen at 500~650℃ for 60 hours. The compounds are of single phase and crystallize in tetragonal structure with parameters α=0.5260nm~0.5131nm and c=1.18211nm~1.1122nm. There are two broad absorption bands in the IR spectra of the Ln₂Mo₃O₉. All of the compounds are n-type semiconductors with ρ_r.t. =92.13Ωcm~7.51Ωcm. Their electrical properties at 10~350℃ and magnetic properties at 100~250K were measured.
- rare earth molybdate,
- structure,
- electrical property,
- magnetic property
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Preparation,Structure,Electrical and Magnetic Properties of Ln₂Mo₃O₉