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Title: Study of physical properties of integrated ferroelectric/ferromagnetic heterostructures

Abstract

Superlattices (SLs) with different periodicity of ferromagnetic La{sub 0.7}Sr{sub 0.3}MnO{sub 3} (LSMO) and ferroelectric Ba{sub 0.7}Sr{sub 0.3}TiO{sub 3} as constitutive layers were fabricated on conducting LaNiO{sub 3} coated (001) oriented MgO substrates using pulsed laser deposition. The crystallinity, ferroelectric, and magnetic properties of the SLs were studied over a wide range of temperatures and frequencies. The structure exhibited ferromagnetic behavior at 300 K and ferroelectric behavior over a range of temperatures between 100 and 300 K. A frequency-dependent change in dielectric constant and tangent loss were observed above the ferromagnetic-paramagnetic temperature. The frequency-dependent dielectric anomalies are attributed to the change in metallic and magnetic nature of LSMO and also the interfacial effect of two different phases that are connected alternatively in series. The effect of ferromagnetic LSMO layers on ferroelectric properties of the SLs indicated strong influence of the interfaces. The asymmetric behavior of ferroelectric loop and the capacitance-voltage relationship suggest development of a built field in the SLs due to high strain across the interfaces.

Authors:
;  [1]; ;  [1];  [2]
  1. Department of Physics, University of Puerto Rico, Puerto Rico 00931-3343 (United States)
  2. Cavendish Laboratory, Department of Physics, Cambridge University, Cambridge CB3 0HE (United Kingdom)
Publication Date:
OSTI Identifier:
21476295
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 107; Journal Issue: 11; Other Information: DOI: 10.1063/1.3437627; (c) 2010 American Institute of Physics; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM COMPOUNDS; CAPACITANCE; CERAMICS; CRYSTAL STRUCTURE; ENERGY BEAM DEPOSITION; FERROELECTRIC MATERIALS; FERROMAGNETIC MATERIALS; FREQUENCY DEPENDENCE; INTERFACES; LANTHANUM COMPOUNDS; LASER RADIATION; MAGNESIUM OXIDES; MAGNETIC PROPERTIES; MANGANATES; PARAMAGNETISM; PERMITTIVITY; PULSED IRRADIATION; STRONTIUM COMPOUNDS; SUBSTRATES; TEMPERATURE DEPENDENCE; ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; DEPOSITION; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; IRRADIATION; MAGNESIUM COMPOUNDS; MAGNETIC MATERIALS; MAGNETISM; MANGANESE COMPOUNDS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; RARE EARTH COMPOUNDS; SURFACE COATING; TRANSITION ELEMENT COMPOUNDS

Citation Formats

Martinez, R, Kumar, A, Palai, R, Katiyar, R S, Institute for Functional Nanomaterials, University of Puerto Rico, Puerto Rico 00931-3343, and Scott, J F. Study of physical properties of integrated ferroelectric/ferromagnetic heterostructures. United States: N. p., 2010. Web. doi:10.1063/1.3437627.
Martinez, R, Kumar, A, Palai, R, Katiyar, R S, Institute for Functional Nanomaterials, University of Puerto Rico, Puerto Rico 00931-3343, & Scott, J F. Study of physical properties of integrated ferroelectric/ferromagnetic heterostructures. United States. https://doi.org/10.1063/1.3437627
Martinez, R, Kumar, A, Palai, R, Katiyar, R S, Institute for Functional Nanomaterials, University of Puerto Rico, Puerto Rico 00931-3343, and Scott, J F. Tue . "Study of physical properties of integrated ferroelectric/ferromagnetic heterostructures". United States. https://doi.org/10.1063/1.3437627.
@article{osti_21476295,
title = {Study of physical properties of integrated ferroelectric/ferromagnetic heterostructures},
author = {Martinez, R and Kumar, A and Palai, R and Katiyar, R S and Institute for Functional Nanomaterials, University of Puerto Rico, Puerto Rico 00931-3343 and Scott, J F},
abstractNote = {Superlattices (SLs) with different periodicity of ferromagnetic La{sub 0.7}Sr{sub 0.3}MnO{sub 3} (LSMO) and ferroelectric Ba{sub 0.7}Sr{sub 0.3}TiO{sub 3} as constitutive layers were fabricated on conducting LaNiO{sub 3} coated (001) oriented MgO substrates using pulsed laser deposition. The crystallinity, ferroelectric, and magnetic properties of the SLs were studied over a wide range of temperatures and frequencies. The structure exhibited ferromagnetic behavior at 300 K and ferroelectric behavior over a range of temperatures between 100 and 300 K. A frequency-dependent change in dielectric constant and tangent loss were observed above the ferromagnetic-paramagnetic temperature. The frequency-dependent dielectric anomalies are attributed to the change in metallic and magnetic nature of LSMO and also the interfacial effect of two different phases that are connected alternatively in series. The effect of ferromagnetic LSMO layers on ferroelectric properties of the SLs indicated strong influence of the interfaces. The asymmetric behavior of ferroelectric loop and the capacitance-voltage relationship suggest development of a built field in the SLs due to high strain across the interfaces.},
doi = {10.1063/1.3437627},
url = {https://www.osti.gov/biblio/21476295}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 11,
volume = 107,
place = {United States},
year = {2010},
month = {6}
}