High Figure of Merit Magneto-Optical Ce- and Bi-Substituted Terbium Iron Garnet Films Integrated on Si

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10438605" target="_blank" >RIV/00216208:11320/21:10438605 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=v-tskqr1W5" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=v-tskqr1W5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adom.202100512" target="_blank" >10.1002/adom.202100512</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High Figure of Merit Magneto-Optical Ce- and Bi-Substituted Terbium Iron Garnet Films Integrated on Si

Popis výsledku v původním jazyce

Films of polycrystalline terbium iron garnet (TbIG), cerium-substituted TbIG (CeTbIG), and bismuth-substituted TbIG (BiTbIG) are grown on Si substrates by pulsed laser deposition. The films grow under tensile strain due to thermal mismatch with the Si substrate, resulting in a dominant magnetoelastic anisotropy which, combined with shape anisotropy, leads to in-plane magnetization. TbIG has a compensation temperature of 253 K which is reduced by substitution of Ce and Bi. The Faraday rotation at 1550 nm of the TbIG, Ce(0.36)TbIG, and Bi(0.03)TbIG films is 5400 +/- 600 degrees cm(-1), 4500 +/- 100 degrees cm(-1), and 6200 +/- 300 degrees cm(-1), respectively, while Ce(0.36)TbIG and Bi(0.03)TbIG exhibit lower optical absorption than TbIG, attributed to a reduction in Fe2+ and Tb4+ absorption pathways. The high Faraday rotation of the films, and in particular the high magneto-optical figure of merit of the Bi(0.03)TbIG of 720 degrees dB(-1) at 1550 nm, make these polycrystalline films valuable for applications in integrated photonics.

Název v anglickém jazyce

High Figure of Merit Magneto-Optical Ce- and Bi-Substituted Terbium Iron Garnet Films Integrated on Si

Popis výsledku anglicky

Films of polycrystalline terbium iron garnet (TbIG), cerium-substituted TbIG (CeTbIG), and bismuth-substituted TbIG (BiTbIG) are grown on Si substrates by pulsed laser deposition. The films grow under tensile strain due to thermal mismatch with the Si substrate, resulting in a dominant magnetoelastic anisotropy which, combined with shape anisotropy, leads to in-plane magnetization. TbIG has a compensation temperature of 253 K which is reduced by substitution of Ce and Bi. The Faraday rotation at 1550 nm of the TbIG, Ce(0.36)TbIG, and Bi(0.03)TbIG films is 5400 +/- 600 degrees cm(-1), 4500 +/- 100 degrees cm(-1), and 6200 +/- 300 degrees cm(-1), respectively, while Ce(0.36)TbIG and Bi(0.03)TbIG exhibit lower optical absorption than TbIG, attributed to a reduction in Fe2+ and Tb4+ absorption pathways. The high Faraday rotation of the films, and in particular the high magneto-optical figure of merit of the Bi(0.03)TbIG of 720 degrees dB(-1) at 1550 nm, make these polycrystalline films valuable for applications in integrated photonics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/LTAUSA18176" target="_blank" >LTAUSA18176: Nové materiály a nanostruktury pro spinovou fotoniku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Advanced Optical Materials [online]

ISSN

2195-1071

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

2100512

Kód UT WoS článku

000656268400001

EID výsledku v databázi Scopus

2-s2.0-85107024875