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The magnetic properties of Be-codoped GaMnN grown via molecular beam epitaxy |
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| Authors: | C.X. Gao F.C. Yu S.Y. Jeong A.R. Choi P. Parchinskiy D.J. Kim H.J. Kim Y.E. Ihm C.G. Kim C.S. Kim |
| Affiliation: | 1. Department of Materials Science and Engineering, Chungnam National University, 220 Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea;2. Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea;3. Korea Research Institute of Standard and Science, Daejeon 305-606, Republic of Korea |
| Abstract: | GaMnN and Be-codoped GaMnN were grown via molecular beam epitaxy using a single GaN precursor and their structural and magnetic properties were examined. X-ray diffraction and superconducting quantum interference device (SQUID) measurements revealed that the grown layers are homogeneous without precipitates. The saturation magnetization of GaMnN has increased from ∼4 to ∼16 emu/cm3 via codoping of Be. The d–d exchange interaction between Mn atoms was discussed for the ferromagnetism of GaMnN. |
| Keywords: | 61.72.Vv 61.10.Nz 75.50.Pp |
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