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Infrared absorption spectrum of HoFe3(BO3)4 crystal
Institution:1. Kirensky Institute of Physics SB RAS, Krasnoyarsk 660036, Russia;2. Siberian Federal University, Krasnoyarsk 660079, Russia;1. CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Shenzhen Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China;2. College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China;3. Nanotechnology Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Madras, Chennai 600036, India;1. Solid State Chemistry Research Laboratory, Department of Chemistry, Velammal Engineering College, Surapet, Chennai 600066, India;2. Radiological Physics and Advisory Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India;3. Institute of Physics, University of Sao Paulo, 05508-090 Sao Paulo, SP, Brazil;4. Departamento de Ciências do Mar, Universidade Federal de São Paulo, Rua. Doutor Carvalho de Mendonça, 144, CEP 11070-100 Santos, SP, Brazil
Abstract:Infrared (IR) absorption spectra of HoFe3(BO3)4 crystal have been obtained in spectral range 30–7000 cm−1 at temperatures from 4 to 423 K. Vibrational frequencies have been simulated with ‘Lady’ software package both for high-temperature and low-temperature phases. The experimental spectra have been analyzed on the basis of calculated data, and interpreted within the framework of internal vibrations of ionic complexes of HoFe3(BO3)4 crystal lattice. The spectral range under study was observed to have no Davydov splitting of internal vibrational modes due to unit cell multiplication. No effects of magnetic ordering on the IR spectra of the crystal under study were observed in the low-temperature range.
Keywords:Holmium ferroborate  Infrared absorption
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