Oriented longitudinal media on glass substrates

Microstructural origin of orientation ratio in magnetic recording media

“…We find that the strain anisotropy for all the disks considered here is less than 0.1% in both a and c and does not vary systematically with the OR. Bian et al 17 find a similar trend when plotting the OR versus the strain anisotropy ͑which according to our data in Fig. [13][14][15] Figure 4͑b͒ plots the MrT OR versus the c-axis alignment ͓A in Eq.…”

“…In contrast, Bian et al 17 see no underlayer inplane alignment. 7,17,21 This approach is similar to that used by Bian et al 17 and is an accurate measure of the CrX-preferred orientation. 1͒.…”

“…Several authors have shown that the c-axis alignment is important, 7,11,14,17,21 but this has only been accurately quantified by Bian et al 17 We show in Fig. Several authors have shown that the c-axis alignment is important, 7,11,14,17,21 but this has only been accurately quantified by Bian et al 17 We show in Fig.…”

“…Several authors have shown that the c-axis alignment is important, 7,11,14,17,21 but this has only been accurately quantified by Bian et al 17 We show in Fig. These were obtained by integrating the CoPt-CrB͑1010͒ peak over the polar angle in a manner analogous to that for the underlayer and that used by Bian et al 17 Since the media c axis is orthogonal to the ͑1010͒ direction, this integrated intensity is an accurate measure of the c-axis alignment, albeit shifted by 90°. The black diamonds, blue circles, red squares, and green triangles are for the CrTi ͑8 Å R q ͒, CrMo ͑4 Å R q ͒, CrMo ͑8 Å R q ͒, and dual Cr/ CrMo media, respectively.…”