2016/04/30 by K. G. Yang, Kungan Yang, S. X. Wu +15
Chemistry · Materials Science · Physics and Astronomy · #Analytical Chemistry (journal) #Atmospheric temperature range #Chemistry #Condensed matter physics #Crystallography #Dielectric #Diffraction #Electron diffraction #Ferroelectricity #Magnetic and transport properties of perovskites and related materials #Materials science #Multiferroics #Multiferroics and related materials #Nanotechnology #Optics #Optoelectronics #Phase transition #Raman spectroscopy #Single crystal #Thin film #ZnO doping and properties #cond-mat.mtrl-sci
paper · pdf · doi:10.1088/1361-6463/50/3/035303
arxiv created 2016/04/30 · openalex publication_date 2016/12/09 · arxiv updated 2017/01/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract Cupric oxide single crystal thin films (~26 nm) were grown by plasma-assisted molecular beam epitaxy. X-ray diffraction, Raman spectra and in situ reflection high-energy electron diffraction show that the thin films are 2 × 2 reconstructed with an in-plane compression and out-of-plane stretching. A thermal stimulated current measurement indicates that the electric polarization response is shown in the special 2D cupric oxide single crystal thin film over a wide temperature range from 130 K to near-room temperature. We infer that the abnormal electric response involves the changing of phase transition temperature induced by structure distortion, the spin frustration and the magnetic fluctuation effect of a short-range magnetic order, or the combined action of both of the two factors mentioned above. This work suggests a promising clue for finding new room temperature single phase multiferroics or tuning phase transition temperatures.