TY - JOUR
T1 - Magnetization Dynamic Analysis of Square Model CoFe and CoFeB Ferromagnetic Materials Using Micromagnetic Simulation
AU - Mustaghfiroh, Qoimatul
AU - Kurniawan, Candra
AU - Djuhana, Dede
N1 - Funding Information:
This work is supported by Indexed International Publication Grant (Publikasi Internasional Terindeks, PIT 9) year 2019 No. NKB-0023/UN2.R3.1/HKP.05.00/2019 through DRPM Universitas Indonesia.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/11/12
Y1 - 2019/11/12
N2 - In this study, dynamic magnetization of square model CoFe and CoFeB ferromagnetic materials were observed using micromagnetic simulation based on LLG equation. The geometrical side size was varied from 50 to 500 nm with the thickness of 5 nm and 10 nm. For simulation process, the used damping factor was 0.05 and the cell size of 2.5×2.5×2.5 nm3 was used with respect to exchange length of CoFe and CoFeB. The external magnetic fields were applied in in-plane and out-plane direction to generate magnetic hysteresis loop. It is found that the coercivity decreased as square size increased for both in-plane and out-plane magnetization direction. The coercivity were around 40 to 200 mT for in-plane field magnetization of CoFe. The coercivity tends to constant at 40 mT in diameter less than 100 nm and zero coercivity for diameter greater than 100 nm for out-plane field magnetization. Compared to CoFe, the coercivity in out-plane field is higher than in-plane field in CoFeB square. It is also observed that the switching time and nucleation field increased as the size increased in out-plane direction of both CoFe and CoFeB. The results showed that the different characteristics of magnetic anisotropy of both materials are important in the development of high density magnetic storage.
AB - In this study, dynamic magnetization of square model CoFe and CoFeB ferromagnetic materials were observed using micromagnetic simulation based on LLG equation. The geometrical side size was varied from 50 to 500 nm with the thickness of 5 nm and 10 nm. For simulation process, the used damping factor was 0.05 and the cell size of 2.5×2.5×2.5 nm3 was used with respect to exchange length of CoFe and CoFeB. The external magnetic fields were applied in in-plane and out-plane direction to generate magnetic hysteresis loop. It is found that the coercivity decreased as square size increased for both in-plane and out-plane magnetization direction. The coercivity were around 40 to 200 mT for in-plane field magnetization of CoFe. The coercivity tends to constant at 40 mT in diameter less than 100 nm and zero coercivity for diameter greater than 100 nm for out-plane field magnetization. Compared to CoFe, the coercivity in out-plane field is higher than in-plane field in CoFeB square. It is also observed that the switching time and nucleation field increased as the size increased in out-plane direction of both CoFe and CoFeB. The results showed that the different characteristics of magnetic anisotropy of both materials are important in the development of high density magnetic storage.
KW - Cofe
KW - Cofeb
KW - Hysteresis
KW - Magnetic anisotropy
KW - Micromagnetic
UR - http://www.scopus.com/inward/record.url?scp=85076108349&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/553/1/012009
DO - 10.1088/1757-899X/553/1/012009
M3 - Conference article
AN - SCOPUS:85076108349
VL - 553
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012009
T2 - 19th International Union of Materials Research Societies - International Conference in Asia, IUMRS-ICA 2018
Y2 - 30 October 2018 through 2 November 2018
ER -