Poly magnetic susceptibility

In this study, we extend the range of inorganic materials produced from polymeric precursors to include copper composites. Soluble complexes between poly(2-vinylpyridine) (P2VPy) and cupric chloride were prepared in a mixed solvent of 95% methanol 5% water. Pyrolysis of the isolated complexes results in the formation of carbonaceous composites of copper. The decomposition mechanism of the complexes was studied by optical, infrared, x-ray photoelectron and pyrolysis mass spectroscopy as well as thermogravimetric analysis and magnetic susceptibility measurements. 

Moccia et have calculated magnetic susceptibilities for some small poly-... 

Below the crossover temperature, the square root term becomes dominant and the relaxation of the magnetization is no longer exponential. In contrast with the magnetic susceptibility, the mono-disperse and poly-disperse models predict qualitatively different dynamic behaviors. However, the dominant characteristic time r is still given by Eqs. 37 or 38. 

Scott et al. have recently reported the temperature dependent magnetic susceptibility for several poly(metalphosphinate) substances, [M(0P(RiR2)0]a (M = Cr, NP, Co, Mn, Cu ). The structures and properties of these materials depend upon the substituent groups R as well as the transition metal. There was also a varying degree of order introduced by the presence of... 

Poly(sulfazene) forms single crystals, that is, bundles of highly oriented fibers. The polymer behaves as a metal with respect to reflection, specific heat capacity, electrical conductivity, and magnetic susceptibility. The specific resistance is about 0.001 H cm at room temperature. The polymer is superconducting at 0.26 K. 

Poly(CuPc) Poly(CoPc) Poly(NiPc) Sheet polymers of metal phthalocyanines insoluble electronic spectra, magnetic susceptibility, electrical conductivity, x ray diffraction discussed. [168]... 

There are no reports in the hterature concerning the temperature dependence of the susceptibility of doped PPV. However, if the reported room temperature magnetic susceptibility measured of BF4 doped poly(2,5-diethoxy-p-phenylene-vinylene) [C2H50-PPV(BF4)] [143] is entirely due to a Pauli contribution, an upper estimate of A C f) is 0.03 states/eV-C. 

Gaviyuchenkova,L.P., S.S. Ivanov, V.A. Karavaeva, M.M. Koton and E.A. Sokolova Magnetic Susceptibilities of Poly(a-Acetyldehydroalanine) Chelates with Metals. Tr. Metrol. Inst. SSSR 1968, No. 93, 119. C.A. 70 (1969) 110012h. 

Cao, Y, and Heeger, A. J., Magnetic susceptibility of polyaniline in solution in nonpolar organic solvents and in polyblends in poly(methylmethacrylate), Synth. Met., 52, 193-200 (1992). 

Marioni, P.-A., Stoeckli-Evans, H., Marty, W., Gudel, H.-U., and Williams, A. F., Poly [/i-(2,5-dicarboxypyrazine-3,6-dicarboxylato)-/m 5-diaquairon(II) dihydratel), a member of a new class of quasi-linear chain compounds. Preparation, structure, and magnetic susceptibility, Helv. Chini. Acta, 69, 1004-1011 (1986). 

Two-component systems have received some attention. - Poly(vinyl-idene fluoride>-poly(methyl or ethyl methacrylate)s blends have been mentioned in the previous section. A study of compatibility in blends of poly(vinyl chloride) and ethylene-vinyl acetate copolymer (EVA) has been reported. Spin-lattice relaxation time measurements were bi-exponential corresponding to rigid [poly(vinyl chloride)] and mobile (EVA) phases. A precipitated mixture showed intermingling of EVA in the poly(vinyl chloride) phase, but phase separation occurred on heating. Cashell et a/. have contributed a short note on the effects of magnetic susceptibility inhomogeneities of lincwidths in carbon black-filled... 

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