Magnetic tape device and head tracking servo method

A head tracking servo method comprising:

• reading a servo pattern of a magnetic layer of a magnetic tape by a servo head in a magnetic tape device,
• wherein a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec,
• the servo head is a magnetic head including a tunnel magnetoresistance effect type element as a servo pattern reading element,
• the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support,
• the magnetic layer includes the servo pattern,
• the magnetic layer includes one or more components selected from the group consisting of fatty acid and fatty acid amide, and
• a C—H derived C concentration calculated from a C—H peak area ratio of C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on a surface of the magnetic layer at a photoelectron take-off angle of 10 degrees is 45 to 65 atom %.