| Autor: |
Mahdiye Ijavi, Issa Sobhani, Zoya Sadighi, Abolghasem Ataie |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. 829:520-524 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.829.520 |
| Popis: |
In this study, nickel and Ba-hexaferrite powders were subjected to high energy mechanical milling in argon atmosphere to produce nickel/Ba-hexaferrite magnetic nanocomposite. Effects of milling time and Ni amount on the phase evolution, morphology and magnetic properties of the products have been investigated by XRD, FESEM/SEM and VSM, respectively. XRD analysis of nanocomposite indicated only Ni peaks after 5 h milling which implied the embedding of Ba-hexaferrite particles inside the metallic nickel. FESEM results revealed that the increasing of the milling time up to 30 h reduced nanocomposite particles size into 20 nm. VSM results showed that the magnetic properties of the nickel/Ba-hexaferrite nanocomposite were affected by the process conditions. The highest saturation magnetization (33.8emu/g) was obtained for the sample containing 30 wt% Ni milled for 20 h Ni series of powder mixture. In addition, it was found that by increasing the milling time coercive field decreases. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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