TY  - JOUR
T1  - Hydrogen-Driven Perpendicular Magnetic Anisotropy at the Co/Ir Interface
TT  - Hidrojen Destekli Dik Manyetik Anizotropi: Co/Ir Arayüzü Örneği
AU  - Değer, Caner
PY  - 2025
DA  - October
Y2  - 2025
DO  - 10.29130/dubited.1704212
JF  - Duzce University Journal of Science and Technology
JO  - DÜBİTED
PB  - Duzce University
WT  - DergiPark
SN  - 2148-2446
SP  - 1583
EP  - 1591
VL  - 13
IS  - 4
LA  - en
AB  - Magnetic anisotropy at the nanoscale is a key property for developing advanced spintronic devices, information storage systems, and gas sensors. In this study, we investigate the hydrogen-assisted perpendicular magnetic anisotropy (PMA) in the Co/Ir interface through first-principles density functional theory calculations. Initially, the Co/Ir system exhibits in-plane magnetic anisotropy (IMA). Upon hydrogen absorption, a significant increase in magnetic anisotropy energy is observed, indicating a transition from IMA to PMA. This behavior contrasts sharply with the Co/Rh system, where hydrogen absorption leads to a reduction in magnetic anisotropy energy and a switch from PMA to IMA. The underlying mechanism of these transitions is linked to the hybridization of atomic orbitals at the interface. These findings highlight the potential of hydrogenation as a tool to reversibly control magnetic anisotropy in Co/Ir interfaces, paving the way for new applications in spintronics and gas sensing technologies.
KW  - Perpendicular Magnetic Anisotropy
KW  - Hydrogen Absorption
KW  - Density Functional Theory (DFT)
KW  - Spintronics
N2  - Manyetik anizotropi, ileri düzey spintronik aygıtlar, bilgi depolama sistemleri ve gaz sensörlerinin geliştirilmesi için anahtar bir özelliktir. Bu çalışmada, Co/Ir arayüzünde hidrojen destekli dikey manyetik anizotropi (PMA) olgusu, birinci ilke yoğunluk fonksiyonel teorisi (DFT) hesaplamaları kullanılarak incelenmiştir. Başlangıçta, Co/Ir sistemi düzlemsel manyetik anizotropi (IMA) göstermektedir. Ancak hidrojen absorbsiyonunun ardından, manyetik anizotropi enerjisinde belirgin bir artış gözlemlenmiş ve sistemin IMA'dan PMA'ya geçtiği tespit edilmiştir. Bu davranış, hidrojen absorbsiyonunun PMA'dan IMA'ya geçişe neden olduğu Co/Rh sistemi ile zıtlık göstermektedir. Bu geçişlerin altında yatan mekanizma, arayüzdeki atomik orbitallerin hibritleşmesiyle ilişkilidir. Elde edilen bulgular, Co/Ir arayüzlerinde manyetik anizotropinin hidrojen yoluyla geri dönüşümlü şekilde kontrol edilebileceğini göstererek, bu sistemi spintronik ve gaz algılama teknolojilerinde potansiyel olarak kullanılabilir hale getirmektedir.
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UR  - https://doi.org/10.29130/dubited.1704212
L1  - https://dergipark.org.tr/en/download/article-file/4892372
ER  -