The Effects of Calcination Temperatures on Crystal Structures and Morphologies of Nd1.2FeO3 Synthesized by Solid-State Reaction

5th International Conference on Advanced Materials Sciences and Technology

Sujiono, E.H.^1 ; Dahlan, M.Y.^1 ; Imran, R.A.^1 ; Said, A.C.M.^1 ; Samnur, S.^1

Laboratory of Materials Physics, Department of Physics, Universitas Negeri Makassar, Makassar

90224, Indonesia^1

关键词: Calcination temperature;    Crystal size;    Grain size;    Minor phase;    NdFeO3;    Orthorhombic phase;    Solid state method;    Solid state reaction method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/367/1/012042/pdf
DOI  :  10.1088/1757-899X/367/1/012042

来源: IOP

【 摘 要 】

NdFeO3is one of the oxide alloys that can be used as a raw material for gas sensor. The NdFeO3have been synthesized using solid state reaction method by varying calcination temperatures of 750°C, 850°C, and 950°C for 6 h. All of the Nd1.2FeO3samples were characterized using scanning electron microscope (SEM) and x-ray diffraction (XRD) to identify their morphologies and phases. The results show that all of the samples formed major phase is NdFeO3and minor phase of Nd2O3and have homogenous morphology with estimating grain size is 0,2 μm for all samples. The value of FWHM and the crystal size of Nd1.2FeO3was obtained for each sample is 0.22° and 372 nm. The orthorhombic phase with a dominant peak at hkl (121) is an indication that material has potential application as a gas sensor.