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Ferromagnetic permalloy/p-type boron-doped diamond Schottky barrier diodes

MetadataDetails
Publication Date2025-01-06
JournalApplied Physics Letters
AuthorsMakoto Kawano, Carlos Jorge da Cunha, Kazuyuki Hirama, Kazuhide Kumakura, Yoshitaka Taniyasu
InstitutionsNTT Basic Research Laboratories

Ferromagnetic permalloy/p-type boron (B)-doped diamond Schottky barrier diodes (SBDs) were demonstrated. The SBDs showed a clear rectifying behavior with a high on/off ratio of over 109 and an ideality factor close to unity at 300 K. The Schottky barrier height was 2.07 eV at the permalloy/B-doped diamond interface. The permalloy Schottky electrodes did not intermix with B-doped diamond and had almost the same magnetic properties as bulk permalloy.