论文标题
在外部NDFEO3薄膜中旋转晶格耦合
Spin-lattice coupling in an epitaxial NdFeO3 thin film
论文作者
论文摘要
由于其引人入胜的磁性特性及其潜在的应用，对稀土原氧RFEO3材料（如NDFEO3）进行了深入研究。在这里，我们通过脉冲激光沉积在（001）-SRTIO3上显示了无寄生NFO薄膜的成功外延合成。高分辨率的X射线衍射显示出与散装的原骨状状态相反的拉伸厚度为80 nm厚的NFO膜的连贯的生长和四方样结构。室温磁力测定法表明NFO膜的散装抗铁磁状态。依赖温度的X射线衍射和磁力测定法突出了在Neel温度下的显着自旋晶格耦合，而在250°C左右发现了新的磁结构不稳定性，需要进一步研究。
Rare-earth orthoferrite RFeO3 materials such as NdFeO3 are strongly studied because of their fascinating magnetic properties and their potential applications. Here, we show the successful epitaxial synthesis of parasitic-free NFO thin film by pulsed laser deposition on (001)-SrTiO3. High-resolution X-ray diffraction shows a coherent growth and a tetragonal-like structure of a tensile strained 80 nm thick NFO film in contrast with the bulk orthorhombic state. Room temperature magnetometry indicates a bulk-like antiferromagnetic state for the NFO film. Temperature-dependent X-ray diffraction and magnetometry highlight a significant spin-lattice coupling at the Neel Temperature while a new magneto-structural instability is discovered around 250°C that needs further investigation.
