Synthesis of Cobalt Particles and Investigation of Their Electromagnetic Wave Absorption Characteristics
As the integration technology for integrated circuit (IC) packaging continues to advance, the issue of electromagnetic interference in IC packaging becomes increasingly prominent. Magnetic materials, acknowledged for their superior electromagnetic absorption capabilities, play a pivotal role in miti...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/17/1/200 |
| _version_ | 1797358545104011264 |
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| author | Hong Li Hongyang Li Bo Sheng Bing Zheng Sujun Shi Qing Cai Wenqi Xu Xiuchen Zhao Ying Liu |
| author_facet | Hong Li Hongyang Li Bo Sheng Bing Zheng Sujun Shi Qing Cai Wenqi Xu Xiuchen Zhao Ying Liu |
| author_sort | Hong Li |
| collection | DOAJ |
| description | As the integration technology for integrated circuit (IC) packaging continues to advance, the issue of electromagnetic interference in IC packaging becomes increasingly prominent. Magnetic materials, acknowledged for their superior electromagnetic absorption capabilities, play a pivotal role in mitigating electromagnetic interference problems. In this study, we employed a liquid-phase reduction method. We prepared three types of cobalt (Co) particles with distinct morphologies. Through variations in the synthesis process conditions, we were able to control the aspect ratio of protrusions on the surface of the Co particles. It was found that the sword-like Co particles exhibit superior electromagnetic wave absorption capabilities, showing a reflection loss value of up to −50.96 dB. Notably, when the coating thickness is only 1.6 mm, the effective absorption bandwidth is extended up to 7.6 GHz. The spatially expansive sword-like Co particles, with their unique structure featuring dipole polarization and interfacial polarization, demonstrated enhanced dielectric and magnetic loss capabilities, concurrently showcasing superior impedance-matching performance. |
| first_indexed | 2024-03-08T15:02:35Z |
| format | Article |
| id | doaj.art-96c0455fe8d14ac4a61c45a3ba394973 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T15:02:35Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-96c0455fe8d14ac4a61c45a3ba3949732024-01-10T15:02:57ZengMDPI AGMaterials1996-19442023-12-0117120010.3390/ma17010200Synthesis of Cobalt Particles and Investigation of Their Electromagnetic Wave Absorption CharacteristicsHong Li0Hongyang Li1Bo Sheng2Bing Zheng3Sujun Shi4Qing Cai5Wenqi Xu6Xiuchen Zhao7Ying Liu8Beijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaBeijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaBeijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaBeijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaBeijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaBeijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaBeijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaBeijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaBeijing Institute of Technology, School of Materials Science and Engineering, Beijing 100081, ChinaAs the integration technology for integrated circuit (IC) packaging continues to advance, the issue of electromagnetic interference in IC packaging becomes increasingly prominent. Magnetic materials, acknowledged for their superior electromagnetic absorption capabilities, play a pivotal role in mitigating electromagnetic interference problems. In this study, we employed a liquid-phase reduction method. We prepared three types of cobalt (Co) particles with distinct morphologies. Through variations in the synthesis process conditions, we were able to control the aspect ratio of protrusions on the surface of the Co particles. It was found that the sword-like Co particles exhibit superior electromagnetic wave absorption capabilities, showing a reflection loss value of up to −50.96 dB. Notably, when the coating thickness is only 1.6 mm, the effective absorption bandwidth is extended up to 7.6 GHz. The spatially expansive sword-like Co particles, with their unique structure featuring dipole polarization and interfacial polarization, demonstrated enhanced dielectric and magnetic loss capabilities, concurrently showcasing superior impedance-matching performance.https://www.mdpi.com/1996-1944/17/1/200electronics packaging technologycobalt particleselectromagnetic wave absorbereffective absorption bandwidth |
| spellingShingle | Hong Li Hongyang Li Bo Sheng Bing Zheng Sujun Shi Qing Cai Wenqi Xu Xiuchen Zhao Ying Liu Synthesis of Cobalt Particles and Investigation of Their Electromagnetic Wave Absorption Characteristics Materials electronics packaging technology cobalt particles electromagnetic wave absorber effective absorption bandwidth |
| title | Synthesis of Cobalt Particles and Investigation of Their Electromagnetic Wave Absorption Characteristics |
| title_full | Synthesis of Cobalt Particles and Investigation of Their Electromagnetic Wave Absorption Characteristics |
| title_fullStr | Synthesis of Cobalt Particles and Investigation of Their Electromagnetic Wave Absorption Characteristics |
| title_full_unstemmed | Synthesis of Cobalt Particles and Investigation of Their Electromagnetic Wave Absorption Characteristics |
| title_short | Synthesis of Cobalt Particles and Investigation of Their Electromagnetic Wave Absorption Characteristics |
| title_sort | synthesis of cobalt particles and investigation of their electromagnetic wave absorption characteristics |
| topic | electronics packaging technology cobalt particles electromagnetic wave absorber effective absorption bandwidth |
| url | https://www.mdpi.com/1996-1944/17/1/200 |
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