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Title: Ferroelectric nanostructure having switchable multi-stable vortex states

Abstract

A ferroelectric nanostructure formed as a low dimensional nano-scale ferroelectric material having at least one vortex ring of polarization generating an ordered toroid moment switchable between multi-stable states. A stress-free ferroelectric nanodot under open-circuit-like electrical boundary conditions maintains such a vortex structure for their local dipoles when subject to a transverse inhomogeneous static electric field controlling the direction of the macroscopic toroidal moment. Stress is also capable of controlling the vortex's chirality, because of the electromechanical coupling that exists in ferroelectric nanodots.

Inventors:
 [1];  [1];  [1];  [1];  [1]
  1. Fayetteville, AR
Issue Date:
Research Org.:
University of Arkansas
Sponsoring Org.:
USDOE
OSTI Identifier:
988686
Patent Number(s):
7593250
Application Number:
11/811,444
Assignee:
Board of Trustees of the University of Arkansas (Little Rock, AK)
Patent Classifications (CPCs):
G - PHYSICS G11 - INFORMATION STORAGE G11B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G - PHYSICS G11 - INFORMATION STORAGE G11C - STATIC STORES
DOE Contract Number:  
FG02-05ER46188
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Naumov, Ivan I, Bellaiche, Laurent M, Prosandeev, Sergey A, Ponomareva, Inna V, and Kornev, Igor A. Ferroelectric nanostructure having switchable multi-stable vortex states. United States: N. p., 2009. Web.
Naumov, Ivan I, Bellaiche, Laurent M, Prosandeev, Sergey A, Ponomareva, Inna V, & Kornev, Igor A. Ferroelectric nanostructure having switchable multi-stable vortex states. United States.
Naumov, Ivan I, Bellaiche, Laurent M, Prosandeev, Sergey A, Ponomareva, Inna V, and Kornev, Igor A. Tue . "Ferroelectric nanostructure having switchable multi-stable vortex states". United States. https://www.osti.gov/servlets/purl/988686.
@article{osti_988686,
title = {Ferroelectric nanostructure having switchable multi-stable vortex states},
author = {Naumov, Ivan I and Bellaiche, Laurent M and Prosandeev, Sergey A and Ponomareva, Inna V and Kornev, Igor A},
abstractNote = {A ferroelectric nanostructure formed as a low dimensional nano-scale ferroelectric material having at least one vortex ring of polarization generating an ordered toroid moment switchable between multi-stable states. A stress-free ferroelectric nanodot under open-circuit-like electrical boundary conditions maintains such a vortex structure for their local dipoles when subject to a transverse inhomogeneous static electric field controlling the direction of the macroscopic toroidal moment. Stress is also capable of controlling the vortex's chirality, because of the electromechanical coupling that exists in ferroelectric nanodots.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {9}
}

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