Exploring phase transitions and magnetoelectric coupling of epitaxial asymmetric multilayer heterostructures

Dhiren K. Pradhan; Shalini Kumari; Venkata S. Puli; Dillip K. Pradhan; Ashok Kumar; Sergei V. Kalinin; Rama K. Vasudevan; Ram S. Katiyar; Philip D. Rack

doi:10.1039/d0tc02924f

Exploring phase transitions and magnetoelectric coupling of epitaxial asymmetric multilayer heterostructures

Dhiren K. Pradhan, Shalini Kumari, Venkata S. Puli, Dillip K. Pradhan, Ashok Kumar, Sergei V. Kalinin, Rama K. Vasudevan, Ram S. Katiyar, Philip D. Rack

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Abstract

Magnetoelectric (ME) heterostructures can exhibit higher magnetic and ferroelectric ordering temperatures along with large ME coupling compared to single-phase multiferroic materials. We synthesized Pb(Fe_0.5Nb_0.5)O₃(PFN)/Ni_0.65Zn_0.35Fe₂O₄(NZFO)/Pb(Fe_0.5Nb_0.5)O₃(PFN)/Ni_0.65Zn_0.35Fe₂O₄(NZFO)/Pb(Fe_0.5Nb_0.5)O₃(PFN) multilayer heterostructures having dimensions of 40/10/40/10/40 nm. High quality epitaxial growth of these heterostructures was confirmedviaX-ray diffraction (XRD) and selected area electron diffraction (SAED) patterns. These nanostructures show well saturated polarization (∼52 μC cm⁻²) and magnetization (∼62 emu cm⁻³) at room temperature (RT). The magnetic and ferroelectric transitions occur well above RT. These heterostructures exhibit relaxor behavior and undergo 2nd order ferroelectric phase transition. Magnetodielectric measurements show significant coupling between the magnetic and electrical order parameters at RT. These characteristics of the heterostructures make them suitable as potential candidates for ultra-low power memory, spintronics, and different multifunctional (micro)nanoscale device applications.

Original language	English
Pages (from-to)	12113-12122
Number of pages	10
Journal	Journal of Materials Chemistry C
Volume	8
Issue number	35
DOIs	https://doi.org/10.1039/d0tc02924f
State	Published - Sep 21 2020

Funding

DKP and PDR acknowledge support from the U. S. Department of Energy (DOE) under Grant No. DE-SC0002136. RSK acknowledges the DoD-AFOSR (Grant #FA9550-16-1-0295). Scanning probe microscopy studies were conducted at the Center for Nanophase Materials Sciences which also provided support (RKV and SVK) and which is a DOE Office of Science User Facility. VSP acknowledges Young Talent Fellow (File Number: 88887.468130/2019-00 funding by CAPES-PRINT Program – Call no. 41/2017, (PRINT-Programa Institucional De Internacionalizaão), Brazil. DKP and PDR acknowledge support from the U. S. Department of Energy (DOE) under Grant No. DE-SC0002136. RSK acknowledges the DoD-AFOSR (Grant #FA9550-16-1-0295). Scanning probe microscopy studies were conducted at the Center for Nanophase Materials Sciences which also provided support (RKV and SVK) and which is a DOE Office of Science User Facility. VSP acknowledges Young Talent Fellow (File Number: 88887.468130/2019-00 funding by CAPES-PRINT Program - Call no. 41/2017, (PRINT- Programa Institucional De Internacionalizaҫão), Brazil.

Funders	Funder number
CAPES-PRINT	41/2017
U.S. Department of Energy	DE-SC0002136
Air Force Office of Scientific Research	88887.468130/2019-00, 9550-16-1-0295
Office of Science

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title = "Exploring phase transitions and magnetoelectric coupling of epitaxial asymmetric multilayer heterostructures",

abstract = "Magnetoelectric (ME) heterostructures can exhibit higher magnetic and ferroelectric ordering temperatures along with large ME coupling compared to single-phase multiferroic materials. We synthesized Pb(Fe0.5Nb0.5)O3(PFN)/Ni0.65Zn0.35Fe2O4(NZFO)/Pb(Fe0.5Nb0.5)O3(PFN)/Ni0.65Zn0.35Fe2O4(NZFO)/Pb(Fe0.5Nb0.5)O3(PFN) multilayer heterostructures having dimensions of 40/10/40/10/40 nm. High quality epitaxial growth of these heterostructures was confirmedviaX-ray diffraction (XRD) and selected area electron diffraction (SAED) patterns. These nanostructures show well saturated polarization (∼52 μC cm−2) and magnetization (∼62 emu cm−3) at room temperature (RT). The magnetic and ferroelectric transitions occur well above RT. These heterostructures exhibit relaxor behavior and undergo 2nd order ferroelectric phase transition. Magnetodielectric measurements show significant coupling between the magnetic and electrical order parameters at RT. These characteristics of the heterostructures make them suitable as potential candidates for ultra-low power memory, spintronics, and different multifunctional (micro)nanoscale device applications.",

author = "Pradhan, {Dhiren K.} and Shalini Kumari and Puli, {Venkata S.} and Pradhan, {Dillip K.} and Ashok Kumar and Kalinin, {Sergei V.} and Vasudevan, {Rama K.} and Katiyar, {Ram S.} and Rack, {Philip D.}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2020.",

year = "2020",

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doi = "10.1039/d0tc02924f",

language = "English",

volume = "8",

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AU - Pradhan, Dhiren K.

AU - Kumari, Shalini

AU - Puli, Venkata S.

AU - Pradhan, Dillip K.

AU - Kumar, Ashok

AU - Kalinin, Sergei V.

AU - Vasudevan, Rama K.

AU - Katiyar, Ram S.

AU - Rack, Philip D.

PY - 2020/9/21

Y1 - 2020/9/21

N2 - Magnetoelectric (ME) heterostructures can exhibit higher magnetic and ferroelectric ordering temperatures along with large ME coupling compared to single-phase multiferroic materials. We synthesized Pb(Fe0.5Nb0.5)O3(PFN)/Ni0.65Zn0.35Fe2O4(NZFO)/Pb(Fe0.5Nb0.5)O3(PFN)/Ni0.65Zn0.35Fe2O4(NZFO)/Pb(Fe0.5Nb0.5)O3(PFN) multilayer heterostructures having dimensions of 40/10/40/10/40 nm. High quality epitaxial growth of these heterostructures was confirmedviaX-ray diffraction (XRD) and selected area electron diffraction (SAED) patterns. These nanostructures show well saturated polarization (∼52 μC cm−2) and magnetization (∼62 emu cm−3) at room temperature (RT). The magnetic and ferroelectric transitions occur well above RT. These heterostructures exhibit relaxor behavior and undergo 2nd order ferroelectric phase transition. Magnetodielectric measurements show significant coupling between the magnetic and electrical order parameters at RT. These characteristics of the heterostructures make them suitable as potential candidates for ultra-low power memory, spintronics, and different multifunctional (micro)nanoscale device applications.

AB - Magnetoelectric (ME) heterostructures can exhibit higher magnetic and ferroelectric ordering temperatures along with large ME coupling compared to single-phase multiferroic materials. We synthesized Pb(Fe0.5Nb0.5)O3(PFN)/Ni0.65Zn0.35Fe2O4(NZFO)/Pb(Fe0.5Nb0.5)O3(PFN)/Ni0.65Zn0.35Fe2O4(NZFO)/Pb(Fe0.5Nb0.5)O3(PFN) multilayer heterostructures having dimensions of 40/10/40/10/40 nm. High quality epitaxial growth of these heterostructures was confirmedviaX-ray diffraction (XRD) and selected area electron diffraction (SAED) patterns. These nanostructures show well saturated polarization (∼52 μC cm−2) and magnetization (∼62 emu cm−3) at room temperature (RT). The magnetic and ferroelectric transitions occur well above RT. These heterostructures exhibit relaxor behavior and undergo 2nd order ferroelectric phase transition. Magnetodielectric measurements show significant coupling between the magnetic and electrical order parameters at RT. These characteristics of the heterostructures make them suitable as potential candidates for ultra-low power memory, spintronics, and different multifunctional (micro)nanoscale device applications.

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Exploring phase transitions and magnetoelectric coupling of epitaxial asymmetric multilayer heterostructures

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