| dc.contributor | 應物所 | en_US |
| dc.creator (作者) | 李尚凡 | zh_TW |
| dc.creator (作者) | Faris B. Abdul Ahad; Lee,Shang-Fan ; Hung,Dung-Shing ; Yao,Yeong-Der ; Yang,Ruey-Bin ; Lin,Chung-Kwei ; Tsay,Chien-Yie | en_US |
| dc.date (日期) | 2010 | en_US |
| dc.date.accessioned | 9-Oct-2014 15:49:47 (UTC+8) | - |
| dc.date.available | 9-Oct-2014 15:49:47 (UTC+8) | - |
| dc.date.issued (上傳時間) | 9-Oct-2014 15:49:47 (UTC+8) | - |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/70500 | - |
| dc.description.abstract (摘要) | The dielectric and magnetic properties of manganese oxide-coated Fe3O4 nanoparticles (NPs) were measured by the cavity perturbation method at x-band microwave frequencies ranging from 7–12.5 GHz with controlled external magnetic field up to 2.2 kOe at room temperature. Different ratios (5%, 10%, and 20% by weight) of coated NPs were prepared by sol-gel method then mixed with carbonyl ironpowder in epoxy matrix. The saturation magnetization is inversely proportional to the NPs ratio in the mixture between 150 and 180 emu/g. The real part of the permittivity decreased with increasing NPs concentration, but the permittivity change by magnetic field increased. The tunability behavior is explained by insulator-ferromagnetic interface magnetoelectricity and the large surface volume ratio for the NPs. | en_US |
| dc.format.extent | 408090 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.language.iso | en_US | - |
| dc.relation (關聯) | J. Appl. Phys,107, 09D904 | en_US |
| dc.title (題名) | Magnetoelectric behavior of carbonyl iron mixed Mn oxide-coated ferrite nanoparticles | en_US |
| dc.type (資料類型) | article | en |
