Abstract: The present invention provides a disc-shaped magnetic recording medium particularly suitable for high density recording obtainable a high output power with low noise. In the disc-shaped magnetic recording medium according to the present invention, a ferromag netic powder having a coercive force of about 1,000 Oe or higher and a BET specific surface area in the range from about 25 to 70 m.sup.2 /g is employed. This allows a decrease in noise level and satisfies the electromagnetic performance requirements for high density recording. A random (unoriented) orientation or a circumferential orientation of the ferromagnetic powder in the magnetic layer provides high output power without causing a variation in output power.

Abstract: The present invention makes it possible that in a magnetic recording medium having a magnetic layer which contains therein ferromagnetic powder and serving as a magnetic recording medium for short wavelength recording in, for example, a video tape recorder, when the coercive force of the magnetic layer is over 1000 Oe, the specific surface area of its ferromagnetic alloy powder measured according to BET adsorption method is made 45 m.sup.2 /g or above, and the high density recording where the central recording wavelength is not more than 1 .mu.m is carried out thus recording and playback with low noise and high output being made.

Abstract: A magnetic recording medium has on a nonmagnetic support, a magnetic layer consisting mainly of an acicular magnetic powder and a binder. The medium has excellent magnetic characteristics required for short-wave recording and has an excellent durability. For this purpose, the medium contains a ferromagnetic metal powder which has a coercive force of not less than 1,000 Oe and a specific surface area as determined by the BET method, of not less that 45 m.sup.2 /g. The medium contains in the binder not less than 50% by weight of a resin which has a high dispersibility owing to the introduction of at least one polar group selected from the group consisting of polar groups having the general formulas of: ##STR1## (wherein M is hydrogen, lithium, sodium or potassium; and M.sub.1 and M.sub.2 are hydrogen, lithium, sodium, potassium or alky groups).