The Effect of Molar Ratio on Crystal Structure and Morphology of Nd1+XFeO3 (X=0.1, 0.2, and 0.3) Oxide Alloy Material Synthesized by Solid State Reaction Method

4th International Conference on Advanced Materials Science and Technology

Zharvan, V.^1 ; Kamaruddin, Y.N.I.^1 ; Samnur, S.^1 ; Sujiono, E.H.^1

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

90224, Indonesia^1

关键词: Alloy materials;    Crystal structure and morphology;    Crystalline size;    Gas sensitive property;    Gas sensor materials;    Molar ratio;    Solid state method;    Solid state reaction method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/202/1/012072/pdf
DOI  :  10.1088/1757-899X/202/1/012072

来源: IOP

【 摘 要 】

Perovskite is an oxide alloy which has a structure of ABO3(A = La, Nd, Sm, Gd; B = Fe, CO, Ni) and has an excellent catalytic activity and gas-sensitive properties. NdFeO3and its derivatives are important candidates for gas sensors. In this study, the effect of molar ratio (x=0.1, 0.2 and 0.3) on crystal structure and morphology of Nd1+xFeO3synthesized by solid state reaction method has been studied. Nd1+xFeO3samples were prepared using Nd2O3(99.99 %) and Fe2O3(99.99 %) as precursors. All of the samples were characterized using XRD to identify the phase and using SEM to identify the morphology. The synthesized Nd1+xFeO3samples showed that molar ratio strongly influences the intensity, FWHM, and crystalline size. The samples of Nd1+xFeO3have homogenous morphology and have three major phases, i.e. NdFeO3, Nd(OH)3and Nd2O3with crystalline sizes of NdFeO3of 137.0±0.1 nm, 152.2±0.1 nm and 137.0±0.1 nm for Nd1.1FeO3, Nd1.2FeO3, and Nd1.3FeO3, respectively. These results indicated that the sample of Nd1.2FeO3was a good candidate for a gas sensor material.