Enhanced magneto-optical effect in Y1.5Ce1.5Fe5O12 thin films deposited on silicon by pulsed laser deposition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10367428" target="_blank" >RIV/00216208:11320/17:10367428 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jallcom.2017.01.315" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2017.01.315</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2017.01.315" target="_blank" >10.1016/j.jallcom.2017.01.315</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced magneto-optical effect in Y1.5Ce1.5Fe5O12 thin films deposited on silicon by pulsed laser deposition

Popis výsledku v původním jazyce

Polycrystalline Ce: YIG thin films deposited on silicon are promising material candidates for integrated nonreciprocal photonic devices. So far, the reported Faraday rotation of polycrystalline Ce: YIG thin films on silicon is much lower than that of their single crystal or epitaxial thin film counterparts, limiting the magneto-optical figure of merit, device bandwidth and fabrication tolerance. In this paper, we report the growth of Ce: YIG thin films on silicon from targets with high Ce concentration up to nominally Y1.5Ce1.5Fe5O12 by pulsed laser deposition. The polycrystalline Y1.5Ce1.5Fe5O12 thin film showed pure garnet phase, smooth surface roughness of 0.7 nm, a dominant Ce(3+)valence state and a bulk-like saturation magnetization of 125 emu/cm(3) at room temperature. This material shows high Faraday rotation of-6410 deg/cm at 1550 nmwavelength, exceeding that of an Y2Ce1Fe5O12 epitaxial thin film on a GGG (100) substrate. However higher loss and lower figure of merit is also observed at 1550 nm wavelength compared to Y2Ce1Fe5O12 thin films, possibly due to the low oxygen partial pressure during fabrication. Low deposition oxygen partial pressure is essential to enhance the Ce solubility and Ce3+ concentration, which results in large Faraday rotation.

Název v anglickém jazyce

Enhanced magneto-optical effect in Y1.5Ce1.5Fe5O12 thin films deposited on silicon by pulsed laser deposition

Popis výsledku anglicky

Polycrystalline Ce: YIG thin films deposited on silicon are promising material candidates for integrated nonreciprocal photonic devices. So far, the reported Faraday rotation of polycrystalline Ce: YIG thin films on silicon is much lower than that of their single crystal or epitaxial thin film counterparts, limiting the magneto-optical figure of merit, device bandwidth and fabrication tolerance. In this paper, we report the growth of Ce: YIG thin films on silicon from targets with high Ce concentration up to nominally Y1.5Ce1.5Fe5O12 by pulsed laser deposition. The polycrystalline Y1.5Ce1.5Fe5O12 thin film showed pure garnet phase, smooth surface roughness of 0.7 nm, a dominant Ce(3+)valence state and a bulk-like saturation magnetization of 125 emu/cm(3) at room temperature. This material shows high Faraday rotation of-6410 deg/cm at 1550 nmwavelength, exceeding that of an Y2Ce1Fe5O12 epitaxial thin film on a GGG (100) substrate. However higher loss and lower figure of merit is also observed at 1550 nm wavelength compared to Y2Ce1Fe5O12 thin films, possibly due to the low oxygen partial pressure during fabrication. Low deposition oxygen partial pressure is essential to enhance the Ce solubility and Ce3+ concentration, which results in large Faraday rotation.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

703

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

591-599

Kód UT WoS článku

000397634000074

EID výsledku v databázi Scopus

2-s2.0-85012081773