Coy Emerson, Graczyk Piotr, Yate Luis, Załęski Karol, Gapiński Jacek, Kuświk Piotr, Mielcarek Sławomir, Stobiecki Feliks, Mróz Bogusław, Ferrater Cesar, Jurga Stefan
NanoBioMedical Centre, Adam Mickiewicz University, Umultowska 85, 61-614, Poznań, Poland.
Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614, Poznań, Poland.
Sci Rep. 2017 Sep 18;7(1):11800. doi: 10.1038/s41598-017-12370-y.
Gd(MoO) (GMO) is a well-studied multiferroic material that exhibits full ferroelectric and ferroelastic behavior at room temperature. However, its difficult stabilization in thin films has prevented the study and exploitation of its multiferroic properties in different architectures. Here, we report on the study of GMO thin films deposited on Si(001) substrates by Pulsed Laser Deposition (PLD). The physicochemical properties of the films are discussed and studied. Results obtained by X-ray diffraction, X-ray photoelectron spectroscopy, high resolution transmission microscopy and second harmonic generation show that the orthorhombic (β'-GMO) multiferroic phase can be stabilized and homogenized by post deposition thermal reconstruction. Finally, the reconstruction process takes place via a complex surface mechanism with a clear leaf-like behavior.
钆钼酸盐（Gd(MoO)，简称GMO）是一种经过充分研究的多铁性材料，在室温下呈现出完全的铁电和铁弹行为。然而，其在薄膜中难以稳定存在，这阻碍了对其在不同结构中的多铁性特性进行研究和开发。在此，我们报告了通过脉冲激光沉积（PLD）在Si(001)衬底上沉积GMO薄膜的研究。对薄膜的物理化学性质进行了讨论和研究。通过X射线衍射、X射线光电子能谱、高分辨率透射显微镜和二次谐波产生获得的结果表明，正交晶系（β'-GMO）多铁性相可以通过沉积后热重构实现稳定和均匀化。最后，重构过程通过一种具有明显叶状行为的复杂表面机制发生。
