Abstract: A perpendicular magnetic recording head comprises a write pole having a pole tip adjacent to an air bearing surface, a return pole, a pedestal for magnetically coupling the write pole to the return pole, a coil for inducing magnetic flux in the write pole, and a shield for coupling magnetic flux from the coil to the return pole. Disc drives that include such recording heads are also provided.

Abstract: The present invention provides magnetic recording heads which utilize higher order excitations of dynamic magnetization to increase frequency without the necessity of biasing the write yoke. In accordance with the present invention, the size and placement of current-carrying microstrip waveguide(s) and write pole(s) are controlled in order to generate spin wave write modes. During writing operations, the magnetization is driven into higher order spatial spin wave modes.

Abstract: A write driver for use with a magnetic recording head includes a photoconductive switch that is positioned adjacent a magnetic recording head for switching current waveforms. Both light and a DC voltage are applied to the photoconductive switch to switch the applied current waveforms. The write driver further includes means for writing to a storage medium in response to current waveforms switched by the photoconductive switch. The write driver may also include a suspension that supports at least one photoconductive switch, DC conductors for supplying a DC voltage, means for supplying light, and recording head means for writing to a storage medium.

Abstract: A write head for writing information bits to magnetic storage media includes a first write pole for producing a first magnetic field in a first direction and a second write pole for producing a second magnetic field such that the combined field from the two poles lies either substantially along the first direction or in a second direction that is substantially orthogonal to the first direction. The second write pole includes a free layer having magnetization controlled by spin transfer torque, and a first spacer positioned between the free layer and the first write pole. The write head can further include a pinned layer and a second spacer positioned between the pinned layer and the free layer. A disc drive that includes the write head and a method of writing to magnetic storage media that utilizes the write head are also included.

Abstract: A recording head for use with magnetic storage medium applies a magnetic field at a 90-degree angle to the orientation of the magnetizations within the individual domain of the storage medium. This magnetic field results in rotation of the magnetization to approximately 90-degrees from its initial and its final orientation. From this position, a second magnetic field is capable of orienting the magnetization in the desired direction to record the desired bit. A simplified manufacturing process, wherein both of the opposing write poles and their connecting yoke are formed as a single layer during a single deposition or plating process, may be used to manufacture such a recording head.

Abstract: A perpendicular recording head for use with magnetic storage media includes a flux focusing main pole. The main pole includes a layer of material having a high magnetic moment, and a second layer of material having a low magnetic moment. The low moment material is tapered towards the main pole's tip, so that all magnetic flux is channeled into the high moment material before writing to the magnetic storage medium.

Abstract: A perpendicular recording head for use with magnetic storage media includes a flux focusing main pole. The main pole includes a layer of material having a high magnetic moment, and a second layer of material having a low magnetic moment. The low moment material is tapered towards the main pole's tip, so that all magnetic flux is channeled into the high moment material before writing to the magnetic storage medium.

Abstract: A perpendicular magnetic recording head comprises a write pole having a pole tip adjacent to an air bearing surface, a return pole, a pedestal for magnetically coupling the write pole to the return pole, a coil for inducing magnetic flux in the write pole, and a shield for coupling magnetic flux from the coil to the return pole. Disc drives that include such recording heads are also provided.

Abstract: The present invention provides magnetic recording heads which utilize higher order excitations of dynamic magnetization to increase frequency without the necessity of biasing the write yoke. In accordance with the present invention, the size and placement of current-carrying microstrip waveguide(s) and write pole(s) are controlled in order to generate spin wave write modes. During writing operations, the magnetization is driven into higher order spatial spin wave modes.

Abstract: A write head for writing information bits to magnetic storage media comprises a first write pole for producing a first magnetic field in a first direction and a second write pole for producing a second magnetic field such that the combined field from the two poles lies either substantially along the first direction or in a second direction that is substantially orthogonal to the first direction. The second write pole includes a free layer having magnetization controlled by spin transfer torque, and a first spacer positioned between the free layer and the first write pole. The write head can further include a pinned layer and a second spacer positioned between the pinned layer and the free layer. A disc drive that includes the write head and a method of writing to magnetic storage media that utilizes the write head are also included.