Böhmer, Roland2008-06-122008-06-121994-09-01Böhmer, R.: Non-linearity and non-exponentiality of primary relaxations. In: Journal of Non-Crystalline Solids Jg. 172-174(1994), S. 628-634, doi: 10.1016/0022-3093(94)90499-5.http://hdl.handle.net/2003/2554010.17877/DE290R-3399The glass transformation range of supercooled liquids and amorphous polymers is characterized by a number of unusual properties such as structural state dependence as well as non-Debye and non-Arrhenius behaviors. It is shown how the latter phenomenon, quantified in terms of the fragility index m, is related to the associated spectral width in the linear response regime and to the non-linearity of the enthalpy relaxation for a diverse variety of glass-forming materials.enElsevier Science53010.1016/0022-3093(94)90499-5article (journal)