Optimization of the Gilbert damping constant by annealing CoFeB films sandwiched by Ta, Ru, and Pd layers

Autor:	Sug-Bong Choe, Cheong-Gu Cho, Seung-Young Park, Cheol-Hyun Moon, Joo Sung Kim, Sang-Il Kim, Byoung-Chul Min, Joon Kwon Moon
Rok vydání:	2014
Předmět:	Condensed Matter::Materials Science Materials science Condensed matter physics Annealing (metallurgy) General Physics and Astronomy Damping constant Coercivity
Zdroj:	Journal of the Korean Physical Society. 65:1611-1613
ISSN:	1976-8524 0374-4884
DOI:	10.3938/jkps.65.1611
Popis:	The effects of annealing on the Gilbert damping constant and the magnetic properties are investigated in CoFeB films sandwiched by either Ta, Ru, or Pd layers. As the annealing temperature increases, the damping constant is found to be slightly decreased first and then, rapidly increased. The minimum damping constant is, thus, obtained with a 300 °C-annealed Ta/CoFeB/Ta film while the samples with Ru and Pd layers exhibit their minimum at 200 °C. The coercive field also exhibits a behavior similar to the damping constant; thus, an empirical correlation between them is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::80591b6db287e01ede22d004a66652a9 https://doi.org/10.3938/jkps.65.1611 Zobrazit plný text záznamu Full text from SpringerLink