Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling
In this work, we experimentally demonstrate that it is possible to induce ferromagnetism in CuO by ball milling without any ferromagnetic dopant. The magnetic measurements indicate that paramagnetic CuO is driven to the ferromagnetic state at room temperature by ball milling gradually. The saturatio...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2011-12-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.3670360 |
| _version_ | 1818171895394074624 |
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| author | Daqiang Gao Zhaolong Yang Jing Zhang Guijin Yang Zhonghua Zhu Jing Qi Mingsu Si Desheng Xue |
| author_facet | Daqiang Gao Zhaolong Yang Jing Zhang Guijin Yang Zhonghua Zhu Jing Qi Mingsu Si Desheng Xue |
| author_sort | Daqiang Gao |
| collection | DOAJ |
| description | In this work, we experimentally demonstrate that it is possible to induce ferromagnetism in CuO by ball milling without any ferromagnetic dopant. The magnetic measurements indicate that paramagnetic CuO is driven to the ferromagnetic state at room temperature by ball milling gradually. The saturation magnetization of the milled powders is found to increase with expanding the milling time and then decrease by annealing under atmosphere. The fitted X-ray photoelectron spectroscopy results indicate that the observed induction and weaken of the ferromagnetism shows close relationship with the valence charged oxygen vacancies (Cu1+-VO) in CuO. |
| first_indexed | 2024-12-11T19:03:59Z |
| format | Article |
| id | doaj.art-0ddf56c32b9e40329a4216e8cd459ab7 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-11T19:03:59Z |
| publishDate | 2011-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-0ddf56c32b9e40329a4216e8cd459ab72022-12-22T00:53:56ZengAIP Publishing LLCAIP Advances2158-32262011-12-0114042168042168-610.1063/1.3670360074104ADVTransforming from paramagnetism to room temperature ferromagnetism in CuO by ball millingDaqiang Gao0Zhaolong Yang1Jing Zhang2Guijin Yang3Zhonghua Zhu4Jing Qi5Mingsu Si6Desheng Xue7Key Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaKey Laboratory for Magnetism and Magnetic Materials of MOE, Lanzhou University, Lanzhou 730000, P. R. ChinaIn this work, we experimentally demonstrate that it is possible to induce ferromagnetism in CuO by ball milling without any ferromagnetic dopant. The magnetic measurements indicate that paramagnetic CuO is driven to the ferromagnetic state at room temperature by ball milling gradually. The saturation magnetization of the milled powders is found to increase with expanding the milling time and then decrease by annealing under atmosphere. The fitted X-ray photoelectron spectroscopy results indicate that the observed induction and weaken of the ferromagnetism shows close relationship with the valence charged oxygen vacancies (Cu1+-VO) in CuO.http://dx.doi.org/10.1063/1.3670360 |
| spellingShingle | Daqiang Gao Zhaolong Yang Jing Zhang Guijin Yang Zhonghua Zhu Jing Qi Mingsu Si Desheng Xue Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling AIP Advances |
| title | Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling |
| title_full | Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling |
| title_fullStr | Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling |
| title_full_unstemmed | Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling |
| title_short | Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling |
| title_sort | transforming from paramagnetism to room temperature ferromagnetism in cuo by ball milling |
| url | http://dx.doi.org/10.1063/1.3670360 |
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