Thin Film Products HDD Sputtering Targets
HDDs (Hard Disk Drives) incorporate a variety of precious metal thin films, including Pt-based alloys and ruthenium, in magnetic recording media and magnetic heads.
In recent years, demand for data center storage has continued to grow, driven by the rapid expansion of generative AI, cloud services, video streaming, and IoT. In particular, hyperscale data centers are increasingly adopting high-capacity nearline HDDs to reduce total cost of ownership (TCO), accelerating the transition to storage capacities exceeding 30 TB.
Conventional Perpendicular Magnetic Recording (PMR) technology is approaching its physical limits in areal recording density, driving the adoption of next-generation technologies such as Heat-Assisted Magnetic Recording (HAMR) and Microwave-Assisted Magnetic Recording (MAMR).
The realization of these advanced technologies depends on high-performance thin film materials incorporating precious metals. The purity, compositional precision, and grain structure control of sputtering targets play a critical role in determining recording density and long-term reliability.
Furuya Metal develops and manufactures pure-metal and alloy sputtering targets, with a particular focus on ruthenium.
Features
Furuya Metal’s precious metal sputtering targets are manufactured using technologies refined over many years, covering every stage from raw material refining to target fabrication.
This integrated production capability enables us to minimize impurities that can significantly affect HDD performance and achieve highly uniform thin films.
In addition, our proprietary sintering technology allow us to provide targets with characteristics tailored to customer requirements.
Materials by application
| HDD | Ru、Ru Alloy、Pt Alloy |
|---|---|
| HDD heads | Ru、Ru Alloy、Ir、Ir Alloy、Pt Alloy |
Structure of perpendicular magnetic recording media
Perpendicular Magnetic Recording (PMR) is a technology that has enabled higher recording densities in HDDs. By orienting the magnetization direction perpendicular to the disk surface, PMR allows the formation of smaller recording bits, contributing to increased storage capacity.
Ruthenium has a hexagonal close-packed (hcp) crystal structure and exhibits excellent crystallographic compatibility with magnetic layers such as Co-Cr-Pt alloys. When used as an underlayer, ruthenium promotes the perpendicular orientation of magnetic grains, contributing to improved perpendicular magnetic anisotropy.
As a result, ruthenium plays a critical role in achieving higher recording densities and greater reliability in HDDs.
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