Magnetic heterostructures offer great promise in spintronic devices due to their unique magnetic properties, such as exchange bias effect, topological superconductivity, and magneto-resistance. Although various magnetic heterostructures including core/shell, multilayer, and van der Waals systems have been fabricated recently, the construction of perfect heterointerfaces usually rely on complicated and high-cost fabrication methods such as molecular-beam epitaxy; surprisingly, few one-dimensional (1D) bimagnetic heterojunctions, which provide multidegrees of freedom to modulate magnetic properties via magnetic anisotropy and interface coupling, have been fabricated to date. Here we report a one-pot solution-based method for the synthesis of ferromagnetic/antiferromagnetic/ferromagnetic heterojunction nanorods with excellent heterointerfaces in the case of Cr₂Te₃/MnTe/Cr₂Te₃. The precise control of homogeneous nucleation of MnTe and heterogeneous nucleation of Cr₂Te₃ is a key factor in synthesizing this heterostructure. The resulting 1D bimagnetic heterojunction nanorods exhibit high coercivity of 5.8 kOe and exchange bias of 892.5 Oe achieved by the magnetic MnTe/Cr₂Te₃ interface coupling.

中文翻译：

---

一锅法合成使磁耦合 Cr2Te3/MnTe/Cr2Te3 集成异质结纳米棒

磁性异质结构由于其独特的磁性特性，如交换偏置效应、拓扑超导性和磁阻，在自旋电子器件中提供了广阔的前景。尽管最近已经制造了各种磁性异质结构，包括核/壳、多层和范德华系统，但完美异质界面的构建通常依赖于复杂且成本高的制造方法，如分子束外延；令人惊讶的是，迄今为止，几乎没有制造出一维 (1D) 双磁性异质结，这些异质结提供了通过磁各向异性和界面耦合来调节磁性的多自由度。₂ Te ₃ /MnTe/Cr ₂ Te ₃。MnTe 的均相成核和 Cr ₂ Te _{3 的}异相成核的精确控制是合成这种异质结构的关键因素。所得的一维双磁性异质结纳米棒表现出 5.8 kOe 的高矫顽力和 892.5 Oe 的交换偏压，这是通过磁性 MnTe/Cr ₂ Te ₃界面耦合实现的。