Chemical, mechanical and dielectric properties after sintering of hydrothermal nickel–zinc ferrites
作者： A. Dias , R.L. Moreira
DOI: 10.1016/S0167-577X(98)00219-5
关键词: Dielectric 、 Composite material 、 Grain size 、 Vickers hardness test 、 Materials science 、 Sintering 、 Microstructure 、 Nickel 、 Permittivity 、 Grain boundary 、 Metallurgy
摘要: NiZn ferrites microstructurally controlled were produced after sintering of hydrothermal nanopowders. Chemical microanalyses showed that the zinc-loss phenomenon did not occur significantly, and elements iron nickel probably control diffusion process in initial stage sintering. The hardness dielectric response sintered exhibited a greater dependence on grain size than density samples. variations static permittivity relaxation frequency with conditions correlated microstructural parameters. Complex impedance spectroscopy materials high response, attributed to electron hopping conduction mechanism, revealed presence single relaxation, occurring at boundaries.
elsevier.com
sci-hub.se 参考文章(27)
A DIAS, V. T. L BUONO, J. M. C VILELA, M. S ANDRADE, T. M LIMA, Particle size and morphology of hydrothermally processed MnZn ferrites observed by atomic force microscopy Journal of Materials Science. ,vol. 32, pp. 4715- 4718 ,(1997) , 10.1023/A:1018618628027
Robert E Reed-Hill, Reza Abbaschian, Reza Abbaschian, Physical Metallurgy Principles ,(1972)
S. Lowell, Joan E. Shields, Powder surface area and porosity ,(1984)
G. Campet, C. Geoffroy, J.P. Manaud, J. Portier, Z.W. Sun, J. Salardenne, P. Keou, Influence of crystallinity and structural degects on the electronic properties of transparent and conductive SrTiO3 films, amorphous or crystalline. Comparative study with ITO films Materials Science and Engineering B-advanced Functional Solid-state Materials. ,vol. 8, pp. 45- 52 ,(1991) , 10.1016/0921-5107(91)90017-P
PRINYA SAINAMTHIP, V.R.W. AMARAKOON, Role of Zinc Volatilization on the Microstructure Development of Manganese Zinc Ferrites Journal of the American Ceramic Society. ,vol. 71, pp. 644- 648 ,(1988) , 10.1111/J.1151-2916.1988.TB06382.X
A Dias, N.D.S Mohallem, R.L Moreira, Solid-State Sintering of Hydrothermal Powders: Densification and Grain Growth Kinetics of Nickel–Zinc Ferrites Materials Research Bulletin. ,vol. 33, pp. 475- 486 ,(1998) , 10.1016/S0025-5408(97)00239-0
A. Largeteau, J. L. Miane, J. Ravez, Modelisation d'une relaxation diélectrique de type charges d'espace dans les ferrites NiZn à couches d'arrět Physica Status Solidi (a). ,vol. 125, pp. 697- 705 ,(1991) , 10.1002/PSSA.2211250228
K. Majima, M. Hasegawa, S. Katsuyama, H. Nagai, S. Mishima, ZnO precipitation during sintering of Ni-Zn ferrite used for the substrate of thin-film heads Journal of Materials Science Letters. ,vol. 12, pp. 185- 187 ,(1993) , 10.1007/BF00819954
Kenneth S. Cole, Robert H. Cole, Dispersion and Absorption in Dielectrics I. Alternating Current Characteristics Journal of Chemical Physics. ,vol. 9, pp. 341- 351 ,(1941) , 10.1063/1.1750906
D. Ravinder, Dielectric behaviour of mixed lithium-zinc ferrites Journal of Materials Science Letters. ,vol. 11, pp. 1498- 1500 ,(1992) , 10.1007/BF00729271