A brand-new HDD innovation including three-dimensional magnetic recording might boost storage capabilities and minimize the variety of HDDs required, appealing future expense and energy performances. Credit: SciTechDaily.com
Possibility of ultra-high density disk drive with areal densities going beyond 10 Tbit/ in ² utilizing multi-level magnetic recording.
Research groups from NIMS, Seagate Technology, and Tohoku University have actually made an advancement in the field of disk drive (HDD) by showing the expediency of multi-level recording utilizing a three-dimensional magnetic recording medium to keep digital info. The research study groups have actually revealed that this innovation can be utilized to increase the storage capability of HDDs, which might result in more effective and economical information storage services in the future.
Enhancing Data Storage Capacity
Data centers are significantly keeping huge quantities of information on disk drive (HDDs) that utilize perpendicular magnetic recording (PMR) to keep info at areal densities of around 1.5 Tbit/ in ².(************************************************************************************************************************** )to shift to greater areal densities, a high anisotropy magnetic recording medium including FePt grains integrated with heat-assisted laser writing is needed. This approach, referred to as heat-assisted magnetic recording (HAMR), can sustaining areal recording densities of approximately 10 Tbit/ in ².(********************************************************************************************************************************* )densities of bigger than 10 Tbit/ in ² are possible based upon a brand-new concept shown by keeping numerous recording levels of 3 or 4 compared to the binary level utilized in HDD innovation.
Schematic view of (leading) presently utilized HAMR and (bottom) three-dimensional magnetic recording systems. In the three-dimensional magnetic recording system, the Curie temperature level of each taping layer varies by about 100 K and information are composed to each layer by changing the laser power. Credit: Yukiko Takahashi NIMS, Thomas Chang Seagate Technology, Simon Greaves Tohoku University
Innovations in 3D Magnetic Recording
In this research study, we prospered in organizing the FePt recording layers three-dimensionally, by making lattice-matched, FePt/Ru/ FePt multilayer movies, with Ru as a spacer layer. Measurements of the magnetization reveal the 2 FePt layers have various Curie temperature levels. This indicates that three-dimensional recording ends up being possible by changing the laser power when composing. In addition, we have actually shown the concept of 3D recording through recording simulations, utilizing a media design that simulates the microstructure and magnetic residential or commercial properties of the produced media.
Future Prospects and Implications
The three-dimensional magnetic recording approach can increase taping capability by stacking recording layers in 3 measurements. This indicates that more digital info can be saved with less HDDs, resulting in energy cost savings for information centers. In the future, we prepare to establish procedures to minimize the size of FePt grains, to enhance the orientation and magnetic anisotropy, and to stack more FePt layers to recognize a media structure appropriate for useful usage as a high-density HDD.
This research study was released in Acta Materialia on March 24, 2024.
eference: “Dual-layer FePt-C granular media for multi-level heat-assisted magnetic recording” by P. Tozman, S. Isogami, I. Suzuki, A. Bolyachkin, H. Sepehri-Amin, S.J. Greaves, H. Suto, Y. Sasaki, T.Y. Chang, Y. Kubota, P. Steiner, P.W. Huang, K. Hono and Y.K. Takahashi, 24 March 2024, Acta Materialia
DOI: 10.1016/ j.actamat.2024119869
This research study was carried out byDr P. Tozman, Distinguished Researcher, andDr Yukiko Takahashi, Group Leader of NIMS Center for Magnetic and Spintronics Materials Research,Dr T.Y. Chang, Researcher at Seagate Technology, andProf S.J. Greaves of TohokuUniversity This work was supported by Japan Science and Technology Agency (JST) Strategic Basic Research Programs (CREST) “Integrated Devices and Systems Utilizing Information Carriers” JPMJCR22 C3.
