FERROELECTRIC BEHAVIOR OF NH4FE(SO4)2 x 12H2O Open PDF Document Details Document Type Technical Report Publication Date Apr 27, 1957 Accession Number AD0419078 Entities People F. Jona K. Vedam R. Pepinsky T. Mitsui Organizations Pennsylvania State University Tags DTIC Thesaurus Topics Air Force Curie Temperature Dielectric Permittivity Domain Walls Electric Fields Hysteresis Scientific Research Transition Temperature Transitions