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Regular metal particle (MP) is approximately 40 -100nm whereas Barium Ferrite is approximately 20nm*. The smaller size enables much higher recording density resulting in super high capacity data cartridges.
Oxidization is one of the causes of data deterioration. However, Barium Ferrite is already oxidized and therefore has a much longer life compared to metal particles (MP). While LTO drive systems are recommended for upgrade every 10 years, the road map is purely hardware manufacturer dependent, so longer archival life is preferred.
Barium Ferrite has better frequency characteristics compared to metal particles (MP) resulting in a significantly increased margin of recording capability. Therefore, it is expected that Fujifilm LTO 6 can be written to and read even when the ability of the drive's recording head has diminished after repeated use.