Mohammad Shahnawaze, Ansari and Mohd Hafiz Dzarfan, Othman and Mohammad Omaish, Ansari and Sana, Ansari and Norazlianie, Sazali (2021) Large spin-dependent tunneling magnetoresistance in Fe3O4/PET heterostructures developed at room temperature: A promising candidate for flexible and wearable spintronics. Materials Science & Engineering: B, 265 (115033). pp. 1-10. ISSN 0921-5107. (Published)
|
Pdf
Large spin-dependent tunneling magnetoresistance1.pdf Download (116kB) | Preview |
Abstract
Half-metallic nanocrystalline magnetite (Fe3O4) thin films, with different thicknesses were developed on polyethylene-terephthalate (PET) substrates, by reactive sputtering at room temperature. Fe3O4 film (200-nm thick)/PET heterostructures possess superior electrical and magnetic characteristics, with a Verwey transition temperature (Tv) of ~122 K and a saturation magnetization (Ms) ~ 361 emu/cm3. Furthermore, the antiferromagnetic (AFM)-coupled antiphase boundaries (APBs) controlled the transport properties of the Fe3O4 thin films, due to the tunneling of spin-polarized electrons through the films. Very-high magnetoresistance (MR) value (−8.9%) were observed for HFilm plane, constructed from Fe3O4 (200-nm thick)/PET when H values were below 60 kOe at 300 K. In addition, flexibility tests, to examine resistivity, M-H and MR, were performed using with 90° and 45° bent angles and cyclability experiments were implemented to validate the reproducibility of these characteristics. These outcomes demonstrated that Fe3O4/PET heterostructures may represent a promising candidate for flexible/wearable spintronics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Fe3O4/PET heterostructure; Saturation magnetization; Magnetoresistance; Verwey transition; Flexible spintronics |
| Subjects: | T Technology > TS Manufactures |
| Faculty/Division: | Faculty of Mechanical and Automotive Engineering Technology |
| Depositing User: | Noorul Farina Arifin |
| Date Deposited: | 05 Feb 2021 04:14 |
| Last Modified: | 05 Feb 2021 04:14 |
| URI: | http://umpir.ump.edu.my/id/eprint/30642 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |