Gen 8 spintronic reader

Reading data at the quantum scale

Seagate’s Gen 8 Spintronic Reader harnesses tunneling magnetoresistance to achieve high‑resolution magnetic readback at ultra‑high areal densities. Geometric enhancements improve sensitivity and accuracy, allowing the reader to reliably detect smaller, closely packed bits. This quantum‑based precision is essential for fast, accurate data access as storage density continues to advance.

These layers convert magnetic signals from recorded bits into electrical signals for data retrieval

The stack is constructed through multi-chamber deposition

This manufacturing process remains under continuous vacuum to avoid contamination, with precise control over each layer's thickness. Materials and layer thicknesses provide thermal stability. The magnesium oxide barrier layer in the tunnel junction undergoes controlled oxidation for optimal sensitivity.