Read-Write Characteristics and Magnetic Properties of Co–CoO Obliquely Evaporated Film on a Cobalt Oxide Underlayer

Direct Magnetism Modulation of CsPbBr3 Quantum Dots/Cobalt Heterostructures by Laser Illumination for Spintronic Applications

“…The stress anisotropy changes as a result as well as defects formed by interactions between the pure Co layer and the oxidized Co 2+ layer, which increase the roughness of interface and obstruct domain wall motion during magnetization reversal. Hence, the formation of defects and the variation of the electronic density of Co states may explain the increase in the H c value of the Co layer. − In conclusion, laser illumination can directly alter the magnetic properties of CsPbBr 3 QDs/Co heterostructures.…”

Metal Evaporated Media

“…The addition of a CoO underlayer was proposed instead of SiO 2 , and the performance of thin Co-CoO evaporated films showed significant improvement (Ishida et al, 2000;Maezawa et al, 1999;Shimizu et al, 2004). The CoO underlayer was deposited directly on the polyester substrate using oblique Co evaporation under extremely high oxygen flow rate.…”

“…Consequently, the recording properties of 50-nm-thick Co-CoO magnetic layer could be improved as illustrated in Fig. 2.6: with the presence of the underlayer the medium coercivity increases, the SFD decreases, and consequently, the readback signal roll-off improves (Ishida et al, 2000;Shimizu et al, 2004). However, for much thinner magnetic media, the improvement in recording performance has been limited by the underlayer intrinsic roughness: the advantages of higher coercivity and grain orientation does not compensate for the increased magnetic spacing introduced with the CoO underlayer.…”

“…(a) Table with samples magnetic properties. (b) Signal output as a function of the recording frequency obtained on a drum tester with the same write and read elements (adapted fromShimizu et al, 2004).…”