کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1786680 | 1023422 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Vanadium-induced decrease in the magnetization of a VxCo1−x alloy film on the W(110) surface Vanadium-induced decrease in the magnetization of a VxCo1−x alloy film on the W(110) surface](/preview/png/1786680.png)
The magnetic and structural properties of a series of VxCo1−x alloy films prepared in a variety of compositions on a W(110) surface were investigated using spin-resolved photoemission spectroscopy (SRPES) and low-energy electron diffraction (LEED) measurements. The epitaxial structures of the films were preserved over all V concentrations, despite the observation of a structural phase transition (SPT: hcp/bcc at x = 0.38), which was apparent from the LEED images. A magnetic phase transition (MPT) from ferromagnetic to paramagnetic occurred in the Co-rich region at x = 0.38. The SPT (from hcp and bcc) and MPT (from ferromagnetic to paramagnetic) were clearly correlated at x = 0.38, possibly due to changes in the electronic and magnetic structures of the valence band, as monitored by SRPES and LEED. The magnetization in the VxCo1−x alloy films on a W(110) surface varied systematically with the V concentration, and correlations between the structural changes and magnetic properties were revealed using SRPES and LEED.
► We have investigated the epitaxial VxCo1−x alloy films grown on a W(110) surface.
► At V concentration of 38%, the films undergo the hcp-to-bcc structural transition.
► This transition is accompanied by a profound modification of the valence states.
► Magnetic phase transition and structural phase transition are closely correlated.
Journal: Current Applied Physics - Volume 13, Issue 5, July 2013, Pages 826–829