Dominique Michau

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Recent studies of ceramics of formula Ba 2 LnFeNb 4 O 15 (Ln = rare earth) with the " tetragonal tungsten bronze " (TTB) structure have correlated their room temperature multiferroics properties to the occurrence of barium ferrite parasitic phases. This work presents the elaboration of Ba 2 LaFeNb 4 O 15 and Ba 2 EuFeNb 4 O 15 composite samples with an(More)
Relaxors are very interesting materials but most of the time they are restricted to perovskite materials and thus their flexibility is limited. We have previously shown that tetragonal tungsten bronze (TTB) niobate Ba(2)PrFeNb(4)O(15) was a relaxor below 170 K and that Ba(2)NdFeNb(4)O(15) displays a ferroelectric behavior with a T(C) = 323 K. On scanning(More)
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