Abstract
Low dimensional materials with stable properties have been widely favored by many scientists. In this paper, we present the ferromagnetic hexagonal iron chalcogenide FeSex nanowires that are synthesized by chemical vapor deposition (CVD) method, together with FeTey and FeSezTe1-z nanowires. Notably, these nanowires are coated with as-grown carbon shell, which can naturally prevent the oxidization. The magnetic properties are systematically investigated, and the obvious ferromagnetic signals can be observed in FeSex/FeTey nanowires, while for FeSezTe1-z, the ferromagnetic signal is very weak, replaced by a clear paramagnetic behavior. Additionally, quasi-one-dimensional (Q1D) heterojunctions are achieved, providing unprecedented opportunities in the field of electronic/spintronic devices. Our results offer valuable insights for further exploration of FeSex nanowires and heterojunctions.
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