Ferroelectricity in hexagonal YFeO ₃ film at room temperature

Abstract

Zhang Run-Lan(张润兰) a)b) , Chen Chang-Le(陈长乐) a) † , Zhang Yun-Jie(张云婕) a) , Xing Hui(邢 辉) a) , Dong Xiang-Lei(董祥雷) a) , and Jin Ke-Xin(金克新) a) a)

Structures and local ferroelectric polarization switching properties of orthorhombic YFeO 3 thin film prepared by a sol–gel method

“…Details about the preparation of precursor solution can be found in Ref. [15]. The precursor solution was coated on LSMO/ALO by spincoating process at 1500 rpm.…”

“…It is different from the film deposited on Si substrates as discussed before. [15,16] Although the YFO film shows a different crystal structure with LSMO, but they both belong to the distortion structure of the ideal cubic perovskite ABO Figure 2(b) shows the Raman spectrum of the YFO/LSMO/ALO sample. As expected, the active region for the main vibration modes of the orthoferrites is below 037701-2 600 cm −1 , in good agreement with the already published results.…”

“…In our previous work, [15] the hexagonal YFeO 3 film was prepared by the sol-gel method combined with spin coating technique and its characteristics were analyzed. Here, we obtain the orthorhombic YFeO 3 film successfully, only by changing the lattice-matched substrate.…”

Study on Spermatophyte Diversity in Wudalianchi

“…This area has a temperate continental monsoon climate with an average temperature at -0.5℃, the average yearly precipitation is 476.33mm, average relative humidity over the years is around 69.2%, frost-free period in one year is 121d. The type of soil consist of dark brown soils, meadow soil, swamp soil, peat soil, sandy soil, and pozzolan soil [4].…”

“…howerer, in recent years, as outsanding scientific research object in ecology, people pay more and more attention to ecology research in wudalianchi. Studies on vegetation and community characteristics are increasing gradually [4]. our study focuses on spermatophyte diversity in Wudalianchi, and lay the foundation for further discussion of the ecological adaptability and plant community succession in this area.…”