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Structural, Electrical, and IR Properties of Cu x Co 1–x Fe 2 O 4 ( x = 0, 0.4, 1.0) Prepared by Solid-State Method
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2018-09-29 , DOI: 10.3103/s1061386218030081
A. S. Pujar , A. B. Kulkarni , S. N. Mathad , C. S. Hiremath , M. K. Rendale , M. R. Patil , R. B. Pujar

The effect of copper doping on cobalt ferrites CuxCo1–xFe2O4 (x = 0, 0.4, 1.0) prepared by solid-state method was studied in detail. According to XRD results, the Co–Cu ferrites calcined at 800°C exhibited better crystallinity. Average crystallite sizes varied within the range 18–29 nm. The infrared spectra revealed two principal absorption bands, the high-frequency one ν1 around 600 cm−1 and the low-frequency one ν2 around 400 cm−1, attributed to stretching vibrations of the oxygen–metal bond in the tetrahedral (A) and octahedral (B) sites in the spinel lattice, respectively. The electrical properties of the material were semiconducting in their character. The results were used to obtain the following parameters: force constants for tetrahedral (Kt) and octahedral sites (Ko), Young’s modulus (E), rigidity modulus (G), bulk modulus (B), micro strain (ε), Debye temperature (ΘD), X-ray density (ρX), dislocation density (ρD), transverse (Vt) and longitudinal (Vl) wave velocities.

中文翻译:

固态法制备的Cu x Co 1–x Fe 2 O 4(x = 0、0.4、1.0)的结构,电学和红外性质

详细研究了铜掺杂对固态法制备的铁氧体Cu x Co 1– x Fe 2 O 4x = 0,0.4,1.0)的影响。根据XRD结果,在800°C煅烧的Co-Cu铁氧体表现出更好的结晶度。平均晶粒尺寸在18–29 nm范围内变化。红外光谱显示两个主要的吸收带,高频率的一个ν 1周围600厘米-1和低频率的一个ν 2周围400厘米-1,归因于四面体拉伸氧-金属键的振动()和八面体(B)分别位于尖晶石晶格中。材料的电特性在性质上是半导体。结果用于获得以下参数:四面体(K t)和八面体位点(K o)的力常数,杨氏模量(E),刚度模量(G),体积模量(B),微应变(ε),德拜温度(Θ d),X射线密度(ρ X),位错密度(ρ d),横向(V)和纵向(V)波速。
更新日期:2018-09-29
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