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Condens. Matter 2019, 4(1), 33; https://doi.org/10.3390/condmat4010033

Synthesis of Carbon Showing Weak Antiferromagnetic Behavior at a Low Temperature

Department of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Received: 31 January 2019 / Revised: 13 March 2019 / Accepted: 19 March 2019 / Published: 21 March 2019
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Abstract

In this short communication, we report a new carbon material prepared from meta-linked polyaniline that exhibits weak antiferromagnetic interactions at low temperature. The synthesis of poly(meta-aniline), abbreviated as m-PANI, was conducted using the Ullmann reaction with the aid of Cu+ as a catalyst in the presence of K2CO3. After the generation of radical cations by vapor-phase doping with iodine, carbonization was performed to prepare carbon polyaniline (C-PANI), which comprises condensed benzene rings. Analysis with a superconducting quantum interference device revealed that the resultant carbon exhibits antiferromagnetism at low temperatures. The discovery of this weak antiferromagnetic carbon may contribute to the development of carbon magnets. View Full-Text
Keywords: polymer magnet; polyaniline; antiferromagnetism; superconducting quantum interference device polymer magnet; polyaniline; antiferromagnetism; superconducting quantum interference device
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Otaki, M.; Hirokawa, S.; Goto, H. Synthesis of Carbon Showing Weak Antiferromagnetic Behavior at a Low Temperature. Condens. Matter 2019, 4, 33.

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