The 67th JSAP Spring Meeting 2020

Presentation information

Poster presentation

10 Spintronics and Magnetics » 10 Spintronics and Magnetics(Poster)

[14p-PA1-1~74] 10 Spintronics and Magnetics

Sat. Mar 14, 2020 1:30 PM - 3:30 PM PA1 (PA)

1:30 PM - 3:30 PM

[14p-PA1-11] Magnetic Properties of Poly-crystalline MnAlGe Films: Layer Thickness and Adjacent Layer Dependence

Takahide Kubota1,2, Keita Ito1,2, Masaki Mizuguchi1,2,3, Koki Takanashi1,2,4 (1.IMR, Tohoku Univ., 2.CSRN, Tohoku Univ., 3.JST-CREST, 4.CSIS, Tohoku Univ.)

Keywords:perpendicular magnetization, intermetallic compounds, manganese compounds

Layer-thickness and adjacent layer dependence of crystal structrue and magnetic properties were investigated in poly-crystalline MnAlGe films showing Cu2Sb-type crystal structure.
Film samples were fabricated onto thermally oxidized silicon substrates using an ultra-high vacuum magnetron sputtering machine. Two sereis of samples were fabricated: No buffer samples and MgO buffer samples for both of which capping layers consisted of MgO|Ta layers.
Perpendicular magnetization was clearly observed for layer thicknesses of greater than 10 nm for all samples. No hysteresis was observed in magnetization curves measurements for the "No buffer" sample with a layer thickness of 5 nm. On the other hands, for the "MgO buffer" sample, perpendicular magnetization was clearly observed for the layer thickness of 5 nm.