Enhanced magneto-transport and thermoelectric properties of MnP nanorod thin films grown on Si (1 0 0)
•MnP nanorods thin films were grown on Si(1 0 0) at 300 °C and 400 °C using MBE.•The Curie temperature of MnP nanorod films increased with growth temperature.•MnP films shown Anomalous Hall effect and negative magneto-resistance.•High power factor was observed in the film grown at 400 °C. The MnP th...
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Veröffentlicht in: | Journal of magnetism and magnetic materials 2019-07, Vol.482, p.287-291 |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | •MnP nanorods thin films were grown on Si(1 0 0) at 300 °C and 400 °C using MBE.•The Curie temperature of MnP nanorod films increased with growth temperature.•MnP films shown Anomalous Hall effect and negative magneto-resistance.•High power factor was observed in the film grown at 400 °C.
The MnP thin films were grown on Si (1 0 0) substrates at 300 and 400 °C using molecular beam epitaxy (MBE). The films crystallize in an orthorhombic structure. FE-SEM images indicated that both films are composed of vertically aligned MnP nanorods. However, the density of the nanorods in the film grown at 400 °C is higher than that grown at 300 °C, leading to a considerable decrease of resistivity in this sample. Both films showed a ferromagnetic behavior, but the Curie temperature increased from 275 K for the film grown at 300 °C to 325 K for the film grown at 400 °C. Anomalous Hall effect (AHE) and negative magneto-resistance (MR) were observed in the films. While both films exhibited a metallic behavior, a higher thermoelectric power factor (PF) was achieved for the film grown at 400 °C. |
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ISSN: | 0304-8853 1873-4766 |
DOI: | 10.1016/j.jmmm.2019.03.072 |