The effect of Bragg reflectors on the electromechanical performance of parallel-plate ferroelectric capacitors
Paper i proceeding, 2010

Parallel-plate capacitors based on ferroelectric thin films are considered as high density capacitors and varactors. Due to the small thickness of the ferroelectric films, typically less than 1.0 mu m, high electric fields are generated even at relatively low voltages inducing piezoelectric effect associated with electrostriction. This induced piezoelectric effect has negative impact on ferroelectric capacitors since it causes extra loss (electroacoustic transformation of microwave energy). In this work the use of Bragg reflectors between the substrate and ferroelectric film is proposed as a possible way of suppression of the enhanced losses associated with the piezoelectric activity of the ferroelectric film.

Författare

John Berge

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Martin Norling

Chalmers, Teknisk fysik, Fysikalisk elektronik

Andrei Vorobiev

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Spartak Gevorgian

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

IOP Conference Series: Materials Science and Engineering - Fundamentals and Technology of Multifunctional Oxide Thin Films (Symposium G, EMRS 2009 Spring Meeting) 8–12 June 2009, Strasbourg, France

1757-8981 (ISSN)

Vol. 8 012011-

Styrkeområden

Informations- och kommunikationsteknik

Nanovetenskap och nanoteknik

Materialvetenskap

Drivkrafter

Hållbar utveckling

Ämneskategorier

Materialteknik

Fysik

Fundament

Grundläggande vetenskaper

DOI

10.1088/1757-899X/8/1/012011