Copper ferrite, CuFe2O4, one of the important ferrites due to its interesting electrical, magnetic and structural properties, is obtained by a novel self flash combustion of a homogeneous mixture of one mole copper acetate (89 nm) copper ferrite (less than 100%) is obtained at lower temperatures, whereas 100% copper ferrite is obtained after calcination at 1000℃. Thermal analysis (TG and DTA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), photo microscopy, magnetic and porosity measurements have been carried out for the specimens obtained after calcinations at 700, 800, 900 and 1000℃ to characterize the conversion efficiency of the powder precursors to copper ferrite. It was found that increasing temperature leads to great improvement in the magnetic properties. By increasing calcination temperature from 700～1000℃ saturation magnetic flux density (Bs) increased from 17.8 to 40.8 emu/g, while remnant magnetic flux density (Br) increased from 10.1 to 17.11 emu/g.
参考文献
| [1] | Z Yue;W Guo;J Zhou;Z Gui,L Li .[J].Journal of Magnetism and Magnetic Materials,2004,270:216. |
| [2] | P Kimari;R V Vpdhyay;R V Mehta .[J].Journal of Magnetism and Magnetic Materials,2002,252:35. |
| [3] | S.Dey;J.Ghose .Synthesis,characterization and magnetic studies on nanocrystalline Co_0.2Zn_0.8Fe_2O_4[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2003(11/12):1653-1660. |
| [4] | S Trasatti;J Lipkowski;P N Ross VCH.Electrochemistry of Novel Materials[M].New York,1994:274. |
| [5] | R. N. Singh;J. P. Pandey;N. K. Singh;B. Lal;P. Chartier;J. -F. Koenig .Sol-gel derived spinel M{sub}xCo{sub}(3-x)O{sub}4 (M=Ni, Cu; O≤x≥1) films and oxygen evolution[J].Electrochimica Acta,2000(12):1911-1919. |
| [6] | E. Rios;J. -L. Gautier;G. Poillerat;P. Chartier .Mixed valency spinel oxides of transition metals and electrocatalysis: case of the Mn{sub}xCo{sub}3-xO{sub}4 system[J].Electrochimica Acta,1998(8/9):1491-1497. |
| [7] | M A Wassel;F J Zidan;M El-Wardani .[J].Journal of the Serbian Chemical Society,1989,54(08):425. |
| [8] | V Mucka Radiat .[J].Phys Chem,1996,48(03):309. |
| [9] | L YiF;J Valyon .[J].Journal of Thermal Analysis,1996,46:211. |
| [10] | C. Rath;K.K. Sahu .Preparation and characterization of nanosize Mn-Zn ferrite[J].Journal of Magnetism and Magnetic Materials,1999(1):77-84. |
| [11] | J. H. Lee;D. Y. Maeng .The characteristics of Ni-Zn ferrite powder prepared by the hydrothermal process[J].Journal of Materials Science Letters,1999(13):1029-1031. |
| [12] | S D Sartale;C D Lokh;e .[J].Materials Chemistry and Physics,2001,70:274. |
| [13] | S A Mazen .[J].Materials Chemistry and Physics,2000,62:131. |
| [14] | R P MAHAJAN;K K PATANKAR;M B KOTHALE .Conductivity, dielectric behaviour and magnetoelectric effect in copper ferrite-barium titanate composites[J].Bulletin of Materials Science,2000(4):273-279. |
| [15] | R K Selvan;C O Augustin;L Berchmans;R Saraswathi .[J].Materials Research Bulletin,2003,38:41. |
| [16] | G A El-Shobaky;G A Fagal;M A Ghozza;M Mokhtar .[J].Colloids and Surfaces,1998,142:17. |
| [17] | L G Brynowicz .[J].Thermochimica Acta,1994,239:181. |
| [18] | A Y Obaid;A O Alyoubi;A A Samarkandy;S A AlThabaiti,S S Al-juaid,A A El-Bellihi,ElH M Difallah .[J].Journal of Thermal Analysis and Calorimetry,2000,61:985. |
| [19] | A Afzal;P K Butt;A Ahmed .[J].Journal of Thermal Analysis,1991,37:1015. |
| [20] | G A M Hussein .[J].Journal of Analytical and Applied Pyrolysis,1994,29:89. |
| [21] | K Nakamoto.Infrared Spectra of Inorganic and coordination Compounds[M].Wiley,New York,1970:253. |
| [22] | G. A. El-Shobaky;A. N. Al-Noaimi;A. Abd El-Aal .Effect of lithium oxide doping on surface and catalytic properties of NiO/Fe_2O_3 solids[J].Materials Letters,1995(1/2):39-45. |
| [23] | G. A. El-Shobaky;M. A. Shouman;M. N. Alaya .Effects of Li_2 O Doping on the Surface and Catalytic Properties of Co_3O_4-Fe_2O_3 Solids Precalcined at Different Temperatures[J].Adsorption Science & Technology,2000(3):243-260. |
| [24] | S R Jain;K C Adiga;V R Paiverneker .[J].Combustion and Flame,1981,40:71. |
| [25] | J A Deanand;Lange's H.Book of Chem[M].McGraw-Hill,New York,1979 |
| [26] | M T Colomer;D A Fumo;A M Segadaes .[J].Journal of Materials Chemistry,1999,9:2505. |
| [27] | R E Vandenberghe;E De Grave;G J Long;F Grangean.Mossbaur Effect Studies of Oxidic Spinels in Mossbour Spectroscopy Applied to Inorg. Chem[M].Plenum Press,New York,1989:3, 3. |
| [28] | S Krupicka;P Novak;E P Wohlfarth.Oxide Spinels in Feromagnetic Material[M].Noth Holland,Amestrdam,1982:3. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%