The splitting of the lines in the E.S.R. spectrum of Mn2+ in Al2O3
Affiliation:
1. College of Optical and Electronic Technology, China Jiliang University, Hangzhou, 310018, China;2. Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, China Jiliang University, Hangzhou, 310018, China;3. School of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China;4. Hangzhou Hpwinner Opto Corporation, Hangzhou, 310015, China;1. School of Materials and Energy, Guangdong University of Technology, Waihuan Xi Road, No.100, Guangzhou, 510006, PR China;2. Experimental Teaching Department, Guangdong University of Technology, Waihuan Xi Road, No.100, Guangzhou, 510006, PR China;3. School of Physics & Optoelectronic Engineering, Guangdong University of Technology, Waihuan Xi Road, No.100, Guangzhou, 510006, PR China;1. State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education, Beijing 100083, China;2. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China;1. CEITEC BUT, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic;2. Joint Glass Centre of the IIC SAS, TnU AD, and FCHFPT STU, Studentska 2, 911 50 Trencin, Slovakia;3. CEITEC IPM, Institute of Physics of Materials, Academy of Sciences of the Czech Republic Zizkova 22, 616 62 Brno, Czech Republic;4. Institute of Materials Science and Engineering, Brno University of Technology, Technicka 2, 616 69 Brno, Czech Republic
Abstract:
We have observed Mn2+ as a trace impurity in several crystals of Al2O3. The fourth order crystal field parameters determined from the splitting of the lines, due to the two inequivalent lattice sites in the corundum structure, are as follows: agβ= +12.4 ± 0.5GFgβ= -113 ±1G role=presentation style=font-size: 90%; display: inline-block; position: relative;> An analytical expression is derived which describes the dependence of the splitting of the line on crystal orientation.
