DocumentCode :
1766545
Title :
Improving the Magnetoelectric Response of Laminates Containing High Temperature Piezopolymers
Author :
Gutiérrez, Jon ; Lasheras, Andoni ; Barandiarán, Jose Manuel ; Vilas, Jose Luis ; Sebastián, María San ; León, Luis Manuel
Author_Institution :
Dept. Electr. y Electron., Univ. del Pais Vasco UPV/EHU, Bilbao, Spain
Volume :
49
Issue :
1
fYear :
2013
fDate :
Jan. 2013
Firstpage :
42
Lastpage :
45
Abstract :
High magnetoelectric (ME) coefficients at room temperature have been found when 2-2 type laminates (one magnetostrictive, the other piezoelectric) made of iron-based Metglas alloys and PVDF piezoelectric polymer are used. Searching for a good ME response of such laminate composites when used at high temperatures, we have modified both constituents: first, by using magnetostrictive Metglas 2826 MB (with λs ≈ 11 ppm) in the ribbon form thermally treated at high temperature, in order to get internal stress-relief conditions. The main consequence of such thermal treatment has been to achieve a piezomagnetic coefficient of d33=1.5×10-6/Oe, higher than the measured one in the as-cast state for this alloy. As piezoelectric constituent, we have used a new class of high temperature piezopolymer: a series of nitrile containing polyimide copolymers were fabricated with a mixture of two aromatic diamines, namely 1,3-Bis-2-cyano-3-(3-aminophenoxy)phenoxybenzene (diamine 2CN) and 1,3-Bis(3-aminophenoxy)benzene (diamine 0CN). Those diamines were in 30/70, 40/60, and 50/50 proportions within the 0CN/2CN mixture. We have measured room temperature ME coefficients up to 0.37 V/cm.Oe, being this value directly correlated to the remnant polarization of each copolyimide.
Keywords :
dielectric polarisation; heat treatment; internal stresses; iron alloys; laminates; magnetoelectric effects; magnetostriction; metallic glasses; piezoelectricity; polymer blends; 1,3-Bis(3-aminophenoxy)benzene; 1,3-Bis-2-cyano-3-(3-aminophenoxy)phenoxybenzene; 2-2 type laminates; PVDF piezoelectric polymer; aromatic diamine mixture; cast state; copolyimide remnant polarization; high temperature piezopolymers; internal stress-relief conditions; iron-based Metglas alloys; laminate composites; laminate magnetoelectric response; magnetoelectric coefficients; magnetostrictive Metglas; nitrile containing polyimide copolymers; piezoelectric constituent; piezomagnetic coefficient; thermal treatment; Amorphous magnetic materials; Magnetic hysteresis; Magnetic resonance; Magnetoelectric effects; Magnetostriction; Temperature measurement; Magnetoelectric effects; magnetostriction; piezoelectric devices; polymer films;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2012.2220125
Filename :
6392392
Link To Document :
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