Substrate coherency driven octahedral rotations in perovskite oxide films

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Controlling Octahedral Rotations in a Perovskite via Strain Doping

The perovskite unit cell is the fundamental building block of many functional materials. The manipulation of this crystal structure is known to be of central importance to controlling many technologically promising phenomena related to superconductivity, multiferroicity, mangetoresistivity, and photovoltaics. The broad range of properties that this structure can exhibit is in part due to the ce...

متن کامل

Control of octahedral tilts and magnetic properties of perovskite oxide heterostructures by substrate symmetry.

Perovskite transition-metal oxides are networks of corner-sharing octahedra whose tilts and distortions are known to affect their electronic and magnetic properties. We report calculations on a model interfacial structure which avoids chemical influences and show that the symmetry mismatch imposes an interfacial layer with distortion modes that do not exist in either bulk material, creating new...

متن کامل

Electrically driven octahedral rotations in SrTiO3 and PbTiO3

We investigate the oxygen octahedral rotations that occur in two perovskites, SrTiO3 and PbTiO3, as a function of applied three-dimensional electric displacement field, allowing us to map out the phase diagram of rotations in both the paraelectric and ferroelectric regions of the polar response. First-principles calculations at fixed electric displacement field are used to extract parameters of...

متن کامل

First-principles prediction of oxygen octahedral rotations in perovskite-structure EuTiO3

We present a systematic first-principles study of the structural and vibrational properties of perovskite-structure EuTiO3. Our calculated phonon spectrum of the high-symmetry cubic structural prototype shows strong Mand R-point instabilities, indicating a tendency to symmetry-lowering structural deformations composed of rotations and tilts of the oxygen octahedra. Subsequent explicit study of ...

متن کامل

Vacancies Job in Oxide Perovskite Thin Films

Point defects can affect considerably the structural, magnetic, and transport properties of perovskite-structure materials with chemical formula ABO3. Oxygen vacancies (VO), for example, enable ionic conductivity in perovskite-based solid solutions to be used for electrochemical applications such as solid oxide fuel and electrolysis cells [1]. Likewise, VO can distort significantly the equilibr...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical Review B

سال: 2010

ISSN: 1098-0121,1550-235X

DOI: 10.1103/physrevb.82.113402