Department of Physics and Astronomy, Uppsala University, Box 530, 75121 Uppsala, Sweden.
Langmuir. 2012 Jan 24;28(3):1775-81. doi: 10.1021/la2035642. Epub 2012 Jan 11.
We report on a new nanopatterned structure represented by a single atomic layer of hexagonal boron nitride (h-BN) forming long periodic waves on the Fe(110) surface. The growth process and the structure of this system are characterized by X-ray absorption (XAS), core-level photoemission spectroscopy (CL PES), low-energy electron microscopy (LEEM), microbeam low-energy electron diffraction (μLEED), and scanning tunneling microscopy (STM). The h-BN monolayer on Fe(110) is periodically corrugated in a wavy fashion with an astonishing degree of long-range order, periodicity of 2.6 nm, and the corrugation amplitude of ∼0.8 Å. The wavy pattern results from a strong chemical bonding between h-BN and Fe in combination with a lattice mismatch in either [111] or [111] direction of the Fe(110) surface. Two primary orientations of h-BN on Fe(110) can be observed corresponding to the possible directions of lattice match between h-BN and Fe(110), with approximately equal area of the boron nitride domains of each orientation.
我们报道了一种新的纳米图案结构，由单层六方氮化硼（h-BN）在 Fe(110) 表面形成长周期波。该系统的生长过程和结构通过 X 射线吸收（XAS）、芯层光电子能谱（CL PES）、低能电子显微镜（LEEM）、微束低能电子衍射（μLEED）和扫描隧道显微镜（STM）进行了表征。Fe(110) 上的 h-BN 单层以惊人的长程有序方式周期性地呈波浪形起伏，周期性为 2.6nm，起伏幅度约为 0.8Å。这种波浪图案是由 h-BN 与 Fe 之间的强烈化学键以及 Fe(110)表面的[111]或[111]方向的晶格失配共同作用的结果。在 Fe(110)上可以观察到两种主要的 h-BN 取向，它们对应于 h-BN 和 Fe(110)之间晶格匹配的可能方向，每个取向的氮化硼畴的面积大致相等。
