Title :
Polarized Raman Scattering Studies of Hexagonal YMnO3 Single Crystal
Author :
Guotai Zhou ; Xiaomin Gu ; Weimei Xie ; Tengfei Gao ; Peng, J. ; Wu, X.S.
Author_Institution :
Collaborative Innovation Center of Adv. Microstructures, Nanjing Univ., Nanjing, China
Abstract :
Multiferroic materials coupled ferromagnetic (or antiferromagnetic) and ferroelectric ordering in a single phase. Hexagonal YMnO3 is the most studied member of rare earth manganites multiferroic materials, due to its fascinating underlying physics and broad application prospect in magnetic storage media and spintronics. We used Raman spectroscopy to characterize the vibration modes in hexagonal YMnO3 single crystal grown by optical floating-zone method. The Raman spectroscopies were analyzed in detail in the temperature range from 78 to 313 K. A vibration mode (E2 at 107 cm-1) was first discovered experimentally, indicating the high quality of YMnO3 single crystals. The vibration modes of atoms were confirmed by polarized Raman spectrum analysis.
Keywords :
Raman spectra; antiferromagnetic materials; ferroelectric materials; ferroelectricity; ferromagnetic materials; multiferroics; vibrational modes; yttrium compounds; zone melting; Raman spectroscopy; YMnO3; antiferromagnetic ordering; coupled ferromagnetic ordering; ferroelectric ordering; hexagonal YMnO3 single crystal; hexagonal YMnO3 single crystal growth; magnetic storage media; optical floating-zone method; polarized Raman scattering; rare earth manganites multiferroic materials; spintronics; temperature 78 K to 313 K; vibration modes; Crystals; Measurement by laser beam; Phonons; Raman scattering; Temperature measurement; Vibrations; Floating-zone method; Multiferroic; Raman spectroscopy; Single crystal; YMnO3;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2438154
