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BEGIN:VEVENT
UID:DSC-14845
DTSTART;TZID=Europe/Berlin:20180926T100000
SEQUENCE:1536710906
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20180926T110000
URL:https://dresden-science-calendar.de/calendar/en/detail/14845
LOCATION:IFW\, Helmholtzstraße 2001069 Dresden
SUMMARY:McCord: Challenges in ferromagnetic-piezoelectric magnetoelectric 2
 -2 composite sensor structures
CLASS:PUBLIC
DESCRIPTION:Speaker: Prof. Dr.-Ing. Jeffrey  McCord\nInstitute of Speaker: 
 Kiel University\, Institute for Materials Science\nTopics:\nMaterialien\, 
 Physik\n Location:\n  Name: IFW (B 3E.26\, IFW Dresden\, Helmholtzstraße 
 20)\n  Street: Helmholtzstraße 20\n  City: 01069 Dresden\n  Phone: \n  Fa
 x: \nDescription: From an engineering point of view\, magnetoelastic inter
 actions are often considered an effect that negatively affects soft-magnet
 ic device applications. The use of magnetic materials with strong magnetoe
 lastic contributions is challenging due to the strong coupling of stress a
 nd strain to the magnetic domain structure. Yet\, the utilization of magne
 tostrictive effects offers a path to new sensor concepts with remarkable s
 ensitivity and low limit of detection. Depending on the magnetic field fre
 quency\, the minimum detectable magnetic field can be below 1 pT/Hz^1/2. F
 or the performance of resonant ferromagnetic-piezoelectric magnetoelectric
  2-2 composite sensor structures we find significant noise contributions o
 f magnetic origin. Separating electrical and magnetic contributions from t
 he piezoelectric\, respectively ferromagnetic phases is essential for the 
 optimization of composite magnetoelectric sensor structures working in the
  kHz to hundred MHz regime. Applying magneto-optical imaging under in-oper
 ando conditions on various timescales\, the occurring magnetic effects can
  be evaluated. Magnetic domain effects will be discussed on different type
 s of 2-2 composite sensor structures. The examples include magnetic model 
 structures\, magnetically and electrically modulated\, and surface acousti
 c wave sensor devices. Magnetic characterization is compared to electrical
  analysis. Conclusions for the further optimization of magnetoelectric sen
 sors\, especially of their noise characteristic\, will be discussed.
DTSTAMP:20260524T005958Z
CREATED:20180803T000611Z
LAST-MODIFIED:20180912T000826Z
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