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Direct writing of CoFe alloy nanostructures by focused electron beam induced deposition from a heteronuclear precursor
| Content Provider | Scilit |
|---|---|
| Author | Porrati, F. Pohlit, M. Müller, J. Barth, Sven Biegger, F. Gspan, C. Plank, H. Huth, M. |
| Copyright Year | 2015 |
| Description | Journal: Nanotechnology Recently, focused electron beam-induced deposition has been employed to prepare functional magnetic nanostructures with potential in nanomagnetic logic and sensing applications by using homonuclear precursor gases like $Fe(CO)_{5}$ or $Co_{2}(CO)_{8}$. Here we show that an extension towards the fabrication of bi-metallic compounds is possible by using a single-source heteronuclear precursor gas. We have grown CoFe alloy magnetic nanostructures from the $HFeCo_{3}(CO)_{12}$ metal carbonyl precursor. The compositional analysis indicates that the samples contain about 80 at% of metal and 10 at% of carbon and oxygen. Four-probe magnetotransport measurements are carried out on nanowires of various sizes down to a width of 50 nm, for which a room temperature resistivity of 43 μΩcm is found. Micro-Hall magnetometry reveals that 50 nm × 250 nm nanobars of the material are ferromagnetic up to the highest measured temperature of 250 K. Finally, the transmission electron microscopy (TEM) microstructural investigation shows that the deposits consist of a bcc Co-Fe phase mixed with a $FeCo_{2}$ $O_{4}$ spinel oxide phase with nanograins of about 5 nm diameter. |
| Related Links | http://arxiv.org/pdf/1506.07311 http://iopscience.iop.org/article/10.1088/0957-4484/26/47/475701/pdf |
| Ending Page | 475701 |
| Page Count | 1 |
| Starting Page | 475701 |
| ISSN | 09574484 |
| e-ISSN | 13616528 |
| DOI | 10.1088/0957-4484/26/47/475701 |
| Journal | Nanotechnology |
| Issue Number | 47 |
| Volume Number | 26 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2015-11-27 |
| Access Restriction | Open |
| Subject Keyword | Journal: Nanotechnology Condensed Matter Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Nanoscience and Nanotechnology Mechanics of Materials Mechanical Engineering Bioengineering Electrical and Electronic Engineering |
