Jo, Jeong Hong Shin, Eun Jeong Kim, Hyung-Jun Lim, Sang Ho 2024-01-20T02:31:56Z 2024-01-20T02:31:56Z 2021-09-05 2017-01-01 0304-8853 https://pubs.kist.re.kr/handle/201004/123222 The magnetic properties of epitaxial Fe/MgO structures on Si(100) substrates are investigated over an Fe thickness range of 2-20 nm. Superparamagnetic behavior is observed at an Fe thickness of 2 nm, indicating that no continuous Fe thin film is formed. At Fe thicknesses of 5 nm and higher, a continuous two-dimensional layered structure is formed, which has a dominant epitaxial relationship of Fe[010] (100)//MgO[011] (100)//Si[011](100) and a minor portion of Fe[010](100)//MgO[010](100)//Si[011](100). This structural feature is echoed by a four-fold magnetic anisotropy in the film plane, and this tendency increases with increasing Fe thickness. The strength of the first-order cubic magnetocrystalline anisotropy, which can only be extracted from the structures, is in the range of 3.87 x 10(5)-4.04 x 10(5) erg/cm(3), weaker than that of bulk Fe (4.8 x 10(5) erg/cm(3)). (C) 2016 Elsevier B.V. All rights reserved. English ELSEVIER MGO GROWTH Magnetic properties of epitaxial Fe/MgO structures on Si(100) Article 10.1016/j.jmmm.2016.08.045 1 JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.421, pp.440 - 447 JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 421 440 447 scie scopus 000396488000058 2-s2.0-84982290214 Materials Science, Multidisciplinary Physics, Condensed Matter Materials Science Physics Article MGO GROWTH Epitaxial thin films Magnetic anisotropy Fe/MgO/Si(100) system Si spintronics