Dual-donor (Zn(i) and V(O)) mediated ferromagnetism in copper-doped ZnO micron-scale polycrystalline films : a thermally driven defect modulation process
The paper reports robust ferromagnetic Cu-doped ZnO micron-scale polycrystalline films via spin-coating using high-quality doped nanocrystals. A reliable magnetic response is observed in the 900 °C vacuum annealed film without any ferromagnetic contribution from other sources. Post-annealing treatment in terms of atmosphere and temperature can control the proportion of oxygen vacancies (V(O)) and zinc interstitials (Zn(i)) defects and further help to precisely regulate defect-related ferromagnetic behavior. Complex charge transfer processes derived from dual-donor (Zn(i) and V(O)) to Cu acceptor are revealed by photoluminescence (PL) and electron paramagnetic resonance (EPR) spectra. Based on the above, specific charge transfer (CT)-type Stoner splitting and indirect double-exchange mechanisms are proposed to understand the ferromagnetic origin. The improvable FM performance and annealing-specific modulation further indicate that a thermal driven process can delicately tailor the magnetic property of the transition metal ion-doped ZnO system.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2013 |
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| Erschienen: |
2013 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:5 |
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| Enthalten in: |
Nanoscale - 5(2013), 9 vom: 07. Mai, Seite 3918-30 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Hu, Liang [VerfasserIn] |
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| Links: |
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| Themen: |
00J9J9XKDE |
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| Anmerkungen: |
Date Completed 12.11.2013 Date Revised 21.11.2013 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1039/c3nr00136a |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM22616232X |
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| 100 | 1 | |a Hu, Liang |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Dual-donor (Zn(i) and V(O)) mediated ferromagnetism in copper-doped ZnO micron-scale polycrystalline films |b a thermally driven defect modulation process |
| 264 | 1 | |c 2013 | |
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| 500 | |a Date Completed 12.11.2013 | ||
| 500 | |a Date Revised 21.11.2013 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The paper reports robust ferromagnetic Cu-doped ZnO micron-scale polycrystalline films via spin-coating using high-quality doped nanocrystals. A reliable magnetic response is observed in the 900 °C vacuum annealed film without any ferromagnetic contribution from other sources. Post-annealing treatment in terms of atmosphere and temperature can control the proportion of oxygen vacancies (V(O)) and zinc interstitials (Zn(i)) defects and further help to precisely regulate defect-related ferromagnetic behavior. Complex charge transfer processes derived from dual-donor (Zn(i) and V(O)) to Cu acceptor are revealed by photoluminescence (PL) and electron paramagnetic resonance (EPR) spectra. Based on the above, specific charge transfer (CT)-type Stoner splitting and indirect double-exchange mechanisms are proposed to understand the ferromagnetic origin. The improvable FM performance and annealing-specific modulation further indicate that a thermal driven process can delicately tailor the magnetic property of the transition metal ion-doped ZnO system | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
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| 650 | 7 | |a Copper |2 NLM | |
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| 650 | 7 | |a Zinc Oxide |2 NLM | |
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| 700 | 1 | |a Huang, Jun |e verfasserin |4 aut | |
| 700 | 1 | |a He, Haiping |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Liping |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Shijiang |e verfasserin |4 aut | |
| 700 | 1 | |a Jin, Yizheng |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Luwei |e verfasserin |4 aut | |
| 700 | 1 | |a Ye, Zhizhen |e verfasserin |4 aut | |
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