Electron Spin Resonance of FeCl_3-filled Polyvinylidene Fluoride

作     者：A.Tawansi H.I.Abdel-Kader and E.M.Abdel-Razek(Dept. of Physics, Faculty of Science, Mansoura University, 35516, Egypt)M I Ayad(Dept. of Chemistry Almonofeya University, Shebeen E1-Koam, Egypt) 

作者机构：Dept. of Physics Faculty of Science Mansoura University Egypt Dept. of Chemistry Almonofeya University Shebeen El-Koam Egypt 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：1997年第13卷第3期

页      面：194-198页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 070301[理学-无机化学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：Figure Spin 

摘      要：Electron spin resonance (ESR) measurements were carried out at room temperature (=294 K),for FeCl3-filled polyvinylidene fluoride (PVDF) films, over the filling mass fraction range of 0W0.40. The films were prepared by casting method. The ESR spectrum of the unfilledPVDF was complex, due to the hyperfine interactions. arisen from the free radicals. For PVDF filled with FeCl3 nearly Symmetric Lorentzian ESR signals, without hyperfine spectra, were found around g=1.92. This is attributed to the superexchange magnetic interactions among the symmetrical octahedrally coordinated Fe3+ ions. The effect of the filling level on the following ESR parameters are discussed: signal asymmetry line width, g-factor, relaxation time, spin (and orbital) magnetic moment, number of unpaired electrons per Fe ion and density of spin electrons.