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| Heterogeneous composites with coexisting spin-crossover and long-range magnetic ordering |
| Author Name | Affiliation | E-mail | | LI Gang | State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China | | | ZHANG Xin-Yu | State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China | | | CHEN Feng-Li | State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China | | | ZHANG Cheng-Cheng | State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China | | | GAO Bo-Hong | State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China | | | WEI Hai-Yan | School of Chemistry and Materials Science, Jiangsu Key Laboratory of Biofunctional Materials, Nanjing Normal University, Nanjing 210023, China | weihaiyan@njnu.edu.cn | | WANG Xin-Yi | State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China | wangxy66@nju.edu.cn |
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| Abstract: A facile precipitation transformation method at room temperature was employed to efficiently prepare the FeTrz@PB heterostructural composites containing both[Fe(Htrz)2(trz)](BF4) (Htrz=1H-1,2,4-triazole) and Prussian blue KFeⅢ[FeⅡ(CN)6] with the coexistence of spin crossover (SCO) and long-range magnetic ordering (LRMO). The controllable growth process of these heterostructural composites was fully characterized by scanning electron micro-scope, transmission electron microscope, powder X-ray diffraction, FTIR, X-ray photoelectron spectroscopy, energy-dispersion X-ray analysis, thermogravimetric analysis, and magnetic studies. The size of the PB particles and the appearance of FeTrz@PB can be tuned by controlling the reaction time. Increasing the reaction time leads to the increased ratio of the PB phase in the FeTrz@PB composites. Remarkably, magnetic studies on FeTrz@PB revealed the coexistence of SCO above room temperature (362-392 K) and LRMO at low temperatures (ca. 5.6 K). The high spin (HS) fraction and ZFC/FC intensity gradually increased with the growth time, while the heights of the hysteresis loops decreased gradually. |
| Keywords: spin crossover long-range magnetic ordering precipitation transformation multifunctional magnetic materials |
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| LI Gang,ZHANG Xin-Yu,CHEN Feng-Li,ZHANG Cheng-Cheng,GAO Bo-Hong,WEI Hai-Yan,WANG Xin-Yi.Heterogeneous composites with coexisting spin-crossover and long-range magnetic ordering[J].Chinese Journal of Inorganic Chemistry,2023,39(11):2197-2208. |
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