FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering, namely to a method of making film electrets, and can be used in production of various sensors and transducers of acoustic energy. Macromolecules containing lanthanide nitrates with urea in the form of compounds are intercalated into the polymer matrix Nd(H2O)2(Ur)2(NO3)3 and Pr(Ur)4(NO3)3 with dipole moments of 10.85 and 22.27, respectively.
EFFECT: obtaining electret material with long life time of electronic state.
1 cl, 1 dwg, 1 tbl
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