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- W1607198420 abstract "AbstractThe spinel Co0·8−xCuxZn0·2Fe2O4 (x = 0, 0·1, 0·2, 0·3, 0·4) ferrites and polypyrrol(PPy)-Co0·7Cu0·1Zn0·2Fe2O4 nanocomposites were prepared by self-propagating combustion method and an in situ polymerisation method respectively. The structure, morphology, dielectric, magnetic and microwave absorbing capability of samples were characterised. The results show the average diameter of the Co0·7Cu0·1Zn0·2Fe2O4 ferrites and PPy-Co0·7Cu0·1Zn0·2Fe2O4 nanocomposites is about 15 and 50 nm respectively. In the frequency range of 5·0–20·0 GHz, the reflection loss of the PPy-Co0·7Cu0·1Zn0·2Fe2O4 is between −16·25 and −20·27 dB, and the maximum value is about −20·27 dB at 18·0 GHz with a bandwidth of 2·0 GHz, which is obviously higher than that of the ferrites. The saturation magnetisation (Ms) and residual magnetisation (Mr) of the PPy-Co0·7Cu0·1Zn0·2Fe2O4 are 1·29 and 0·43 emu g−1, which are smaller than those of the ferrites. However, the coercive force (Hc) of the PPy-Co0·7Cu0·1Zn0·2Fe2O4 nanocomposites is 3..." @default.
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- W1607198420 date "2014-10-21" @default.
- W1607198420 modified "2023-09-24" @default.
- W1607198420 title "Dielectric, magnetic and microwave absorbing properties of polypyrrol-Co0·7Cu0·1Zn0·2Fe2O4 nanocomposites" @default.
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- W1607198420 doi "https://doi.org/10.1179/1433075x14y.0000000249" @default.
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