Magnetic coercivity control via buffer layer roughness in Pt/Co multilayers

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10473157" target="_blank" >RIV/00216208:11320/23:10473157 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=yjMD_D~UAm" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=yjMD_D~UAm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmmm.2023.171124" target="_blank" >10.1016/j.jmmm.2023.171124</a>

Result language
angličtina
Original language name
Magnetic coercivity control via buffer layer roughness in Pt/Co multilayers
Original language description
Magnetic properties of thin metallic films are strongly dependent on the growth parameters. Therefore, fine-tuning these parameters is necessary to produce multilayers with specific physical properties required by various applications. Here, we present an efficient approach to tune the coercive field of magnetron sputtered Co/Pt multilayers using Au underlayer with variable thickness. We were able to control the interfacial roughness of the layers in the stack via the change of the Au underlayer thickness due to its island-like growth mechanism (Volmer-Weber mode). As the nominal thickness of Au increased, the islands grew in larger lateral size, resulting in higher surface roughness of the underlayer, which was transferred to subsequent interfaces. Magnetization measurements showed additional magnetic anisotropy promoted by this mechanism. Variating the thickness of the Au layer up to 20 nm, we changed the coercive field in the range from 200 Oe to 1100 Oe while maintaining a nearly constant saturation magnetization. Presented results demonstrate the possibility to precisely design magnetic properties of metallic multilayers for applications via buffer layer roughness engineering.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/GA23-06691S" target="_blank" >GA23-06691S: Development of a sensing device using magneto-optical diffraction on ordered magnetic textures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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