Mid-gap photoluminescence and magnetic properties of GaMnN films grown by metal-organic chemical vapor deposition
Metal-organic chemical vapor deposition （MOCVD） grown ferromagnetic GaMnN films are investigated by photo- luminescence （PL） measurement with a mid-gap excitation wavelength of 405 nm. A sharp PL peak at 1.8 eV is found and the PL intensity successively decreases with the addition of Mn, in which th...
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| Published in | Chinese physics B Vol. 23; no. 10; pp. 538 - 540 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.10.2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 1741-4199 |
| DOI | 10.1088/1674-1056/23/10/107803 |
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| Abstract | Metal-organic chemical vapor deposition （MOCVD） grown ferromagnetic GaMnN films are investigated by photo- luminescence （PL） measurement with a mid-gap excitation wavelength of 405 nm. A sharp PL peak at 1.8 eV is found and the PL intensity successively decreases with the addition of Mn, in which the Mn concentration of sample A is below 1% （[Mn]A =0.75%） but its PL intensity is stronger than other samples＇. The 1.8-eV PL peak is attributed to the recombination of electrons in the t2 state of the neutral Mn3＋ acceptor with holes in the valence band. With Mn concentration increasing, the intensity of the PL peak decreases and the magnetic increment reduces in our samples. The correlation between the PL peak intensity and ferromagnetism of the samples is discussed in combination with the experimental results. |
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| AbstractList | Metal-organic chemical vapor deposition （MOCVD） grown ferromagnetic GaMnN films are investigated by photo- luminescence （PL） measurement with a mid-gap excitation wavelength of 405 nm. A sharp PL peak at 1.8 eV is found and the PL intensity successively decreases with the addition of Mn, in which the Mn concentration of sample A is below 1% （[Mn]A =0.75%） but its PL intensity is stronger than other samples＇. The 1.8-eV PL peak is attributed to the recombination of electrons in the t2 state of the neutral Mn3＋ acceptor with holes in the valence band. With Mn concentration increasing, the intensity of the PL peak decreases and the magnetic increment reduces in our samples. The correlation between the PL peak intensity and ferromagnetism of the samples is discussed in combination with the experimental results. Metal-organic chemical vapor deposition (MOCVD) grown ferromagnetic GaMnN films are investigated by photoluminescence (PL) measurement with a mid-gap excitation wavelength of 405 nm. A sharp PL peak at 1.8 eV is found and the PL intensity successively decreases with the addition of Mn, in which the Mn concentration of sample A is below 1% (A = 0.75%) but its PL intensity is stronger than other samples'. The 1.8-eV PL peak is attributed to the recombination of electrons in the t sub(2) state of the neutral Mn super(3+) acceptor with holes in the valence band. With Mn concentration increasing, the intensity of the PL peak decreases and the magnetic increment reduces in our samples. The correlation between the PL peak intensity and ferromagnetism of the samples is discussed in combination with the experimental results. |
| Author | 邢海英 徐章程 崔明启 谢玉芯 张国义 |
| AuthorAffiliation | School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China lnstitute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China Research Center for Wide-band Semiconductors, Peking University, Beijing 100871, China |
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| Cites_doi | 10.7498/aps.59.504 10.1063/1.123465 10.1063/1.1757641 10.1016/S0921-4526(01)00660-3 10.1063/1.121144 10.1063/1.1289794 10.1063/1.111003 10.1016/S0022-3697(03)00070-2 10.1023/A:1023288718903 10.1063/1.1348302 10.1088/1674-1056/21/7/077801 10.1063/1.3120267 10.1103/PhysRevB.54.10508 10.1063/1.2823602 10.1063/1.1530374 10.1063/1.1456544 10.1016/S0081-1947(08)60371-9 10.1088/0268-1242/8/8/007 10.1063/1.117767 10.1103/PhysRevB.72.115208 |
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| Notes | Xing Hai-Ying, Xu Zhang-Cheng, Cui Ming-Qi, Xie Yu-Xin, and Zhang Guo-Yi（ a） School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China b）Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China C）Research Center for Wide-band Semiconductors, Peking University, Beijing 100871, China Metal-organic chemical vapor deposition （MOCVD） grown ferromagnetic GaMnN films are investigated by photo- luminescence （PL） measurement with a mid-gap excitation wavelength of 405 nm. A sharp PL peak at 1.8 eV is found and the PL intensity successively decreases with the addition of Mn, in which the Mn concentration of sample A is below 1% （[Mn]A =0.75%） but its PL intensity is stronger than other samples＇. The 1.8-eV PL peak is attributed to the recombination of electrons in the t2 state of the neutral Mn3＋ acceptor with holes in the valence band. With Mn concentration increasing, the intensity of the PL peak decreases and the magnetic increment reduces in our samples. The correlation between the PL peak intensity and ferromagnetism of the samples is discussed in combination with the experimental results. GaMnN, photoluminescence, magnetism, metal-organic chemical vapor deposition 11-5639/O4 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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| References | 11 22 12 23 13 24 16 18 Xu Z J (21) 2007; 2 Xing H Y (9) 2010; 59 Zunger A (20) 1986; 39 Xing H Y (15) 2009 1 2 3 4 5 Xing H Y (14) 2011 6 Yang X L (17) 2009 Hofmann G (19) 1993; 8 7 8 Xing H Y (10) 2012; 21 |
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| Snippet | Metal-organic chemical vapor deposition （MOCVD） grown ferromagnetic GaMnN films are investigated by photo- luminescence （PL） measurement with a mid-gap... Metal-organic chemical vapor deposition (MOCVD) grown ferromagnetic GaMnN films are investigated by photoluminescence (PL) measurement with a mid-gap... |
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| SubjectTerms | Chemical vapor deposition Correlation Ferromagnetic materials Ferromagnetism Magnetic properties Manganese MOCVD Photoluminescence Valence band Wavelengths 光致发光 强度比 有机金属 磁特性 能隙 薄膜 金属有机化学气相沉积 |
| Title | Mid-gap photoluminescence and magnetic properties of GaMnN films grown by metal-organic chemical vapor deposition |
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