Magnetoelectric effect in antiferromagnetic multiferroic Pb(Fe1/2 N b1/2)O3 and its solid solutions with PbTi O3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00473841" target="_blank" >RIV/68378271:_____/17:00473841 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevB.95.014207" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.95.014207</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.95.014207" target="_blank" >10.1103/PhysRevB.95.014207</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnetoelectric effect in antiferromagnetic multiferroic Pb(Fe1/2 N b1/2)O3 and its solid solutions with PbTi O3

Popis výsledku v původním jazyce

Antiferromagnets (AFMs) are presently considered as promising materials for applications in spintronics and random access memories due to the robustness of information stored in the AFM state against perturbing magnetic fields. In this respect, AFM multiferroics may be attractive alternatives for conventional AFMs as the coupling of magnetism with ferroelectricity (magnetoelectric effect) offers an elegant possibility of electric-field control and switching of AFM domains. Here we report the results of comprehensive experimental and theoretical investigations of the quadratic magnetoelectric (ME) effect in single crystals and highly resistive ceramics of Pb(Fe1/2Nb1/2)O3 (PFN) and (1-x)Pb(Fe1/2Nb1/2)O3-xPbTiO3(PFN-xPT). We are interested primarily in the temperature range of the multiferroic phase, T<150K, where the ME coupling coefficient is extremely large (as compared to the well-known multiferroic BiFeO3) and shows sign reversal at the paramagnetic-to-antiferromagnetic phase transition. Moreover, we observe strong ME response nonlinearity in the AFM phase in the magnetic fields of only a few kOe. To describe the temperature and magnetic field dependencies of the above unusual features of the ME effect in PFN and PFN-xPT, we use a simple phenomenological Landau approach which explains experimental data surprisingly well. Our ME measurements demonstrate that the electric field of only 20-25 kV/cm is able to switch the AFM domains and align them with ferroelectric ones even in PFN ceramic samples.

Název v anglickém jazyce

Magnetoelectric effect in antiferromagnetic multiferroic Pb(Fe1/2 N b1/2)O3 and its solid solutions with PbTi O3

Popis výsledku anglicky

Antiferromagnets (AFMs) are presently considered as promising materials for applications in spintronics and random access memories due to the robustness of information stored in the AFM state against perturbing magnetic fields. In this respect, AFM multiferroics may be attractive alternatives for conventional AFMs as the coupling of magnetism with ferroelectricity (magnetoelectric effect) offers an elegant possibility of electric-field control and switching of AFM domains. Here we report the results of comprehensive experimental and theoretical investigations of the quadratic magnetoelectric (ME) effect in single crystals and highly resistive ceramics of Pb(Fe1/2Nb1/2)O3 (PFN) and (1-x)Pb(Fe1/2Nb1/2)O3-xPbTiO3(PFN-xPT). We are interested primarily in the temperature range of the multiferroic phase, T<150K, where the ME coupling coefficient is extremely large (as compared to the well-known multiferroic BiFeO3) and shows sign reversal at the paramagnetic-to-antiferromagnetic phase transition. Moreover, we observe strong ME response nonlinearity in the AFM phase in the magnetic fields of only a few kOe. To describe the temperature and magnetic field dependencies of the above unusual features of the ME effect in PFN and PFN-xPT, we use a simple phenomenological Landau approach which explains experimental data surprisingly well. Our ME measurements demonstrate that the electric field of only 20-25 kV/cm is able to switch the AFM domains and align them with ferroelectric ones even in PFN ceramic samples.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review. B

ISSN

1098-0121

e-ISSN

—

Svazek periodika

95

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85012194067