摘要:
The present invention provides a sputtering apparatus and a film-forming method capable of forming a magnetic film having a reduced variation in the orientation of the magnetic anisotropy. The sputtering apparatus of the present invention is equipped with a rotatable cathode and a rotatable stage. The stage can have an electrostatic chuck. Moreover, the stage may electrically be connected with a bias power source capable of applying a bias voltage to the stage. Furthermore, the stage may have the electrostatic chuck and electrically be connected with the bias power source.
摘要:
The present invention is directed to align crystal c-axes in magnetic layers near two opposed junction wall surfaces of a magnetoresistive element so as to be almost perpendicular to the junction wall surfaces. A magnetic sensor stack body has, on sides of opposed junction wall surfaces of a magnetoresistive element, field regions for applying a bias magnetic field to the element. The field region has first and second magnetic layers having magnetic particles having crystal c-axes, the first magnetic layer is disposed adjacent to the junction wall surface in the field region, the crystal c-axes in the first magnetic layer are aligned and oriented along an ABS in a film plane, the second magnetic layer is disposed adjacent to the first magnetic layer in the field region, and the crystal c-axis directions in the second magnetic layer are distributed at random in a plane.
摘要:
A sputtering apparatus includes a target electrode capable of mounting a target, a first support member which supports the target electrode, a magnet unit which forms a magnetic field on a surface of the target, a second support member which supports the magnet unit, and a force generation portion which is provided between the first support member and the second support member, and generates a second force in a direction opposite to a first force that acts on the second support member by an action of the magnetic field formed between the target and the magnet unit, wherein the second force has a magnitude which increases as the magnet unit comes closer to the target electrode.
摘要:
The present invention is directed to align crystal c-axes in magnetic layers near two opposed junction wall surfaces of a magnetoresistive element so as to be almost perpendicular to the junction wall surfaces. A magnetic sensor stack body has, on sides of opposed junction wall surfaces of a magnetoresistive element, field regions for applying a bias magnetic field to the element. The field region has first and second magnetic layers having magnetic particles having crystal c-axes, the first magnetic layer is disposed adjacent to the junction wall surface in the field region, the crystal c-axes in the first magnetic layer are aligned and oriented along an ABS in a film plane, the second magnetic layer is disposed adjacent to the first magnetic layer in the field region, and the crystal c-axis directions in the second magnetic layer are distributed at random in a plane.
摘要:
The present invention provides a magnet unit and a magnetron sputtering apparatus which can suppress the consumption amount of a target by efficiently consuming the target and can easily cause erosion on the target to progress uniformly regardless whether the target size is small or large and whether the target is made of magnetic material or not. A magnet unit according to an embodiment of the present invention includes a member configured to be provided with a predetermined magnet, an internal magnet unit which is provided for the member and includes n magnet elements extending radially in the surface of the member from a predetermined position of the member in at least n (n: positive integer equal to or larger than 3) directions, the n magnet elements having one polarity on a side opposite to the member, and an external magnet unit which is provided for the member so as to surround the internal magnet unit along the shape of the internal magnet unit, the external magnet unit having the other polarity on a side opposite to the member.
摘要:
A magnet unit, which can realize uniform film thickness distribution of a thin film formed on a substrate without increasing the length and width of a target. The magnet unit includes a peripheral magnet, which is disposed on the yoke on the back side of a cathode electrode so as to follow the outline of a target, and an inner magnet disposed in the peripheral magnet and having a polarity different from the polarity of the peripheral magnet. The magnet unit provides a magnetic track MT that is a set of regions which tangents of magnetic field lines M generated on the target parallels to the target surface. The magnet unit further includes n (n is a positive integer of two or more) extending magnetic pole portions and n−1 projecting magnetic pole portions, which form 2n−1 folded shape portions U at the both ends in the longitudinal direction of the magnetic track.
摘要:
A cooling system that cools a wafer in a vacuum chamber of a sputtering apparatus, includes a wafer cooling stage for cooling the wafer, a cooling mechanism for cooling the wafer cooling stage, cooling gas supply units which introduces a cooling gas to the wafer cooling stage, a wafer rotating mechanism which holds the wafer in a state separated from the wafer cooling stage by a predetermined gap, and is rotated while holding the wafer, and a driving mechanism which rotates the wafer rotating mechanism at a predetermined rotational speed.
摘要:
The present invention provides a sputtering apparatus and a film deposition method capable of forming a magnetic film with reduced variations in the direction of magnetic anisotropy. The sputtering apparatus of the present invention is provided with a rotatable cathode (802), a rotatable stage (801) and a rotatable shielding plate (805). The sputtering apparatus controls the rotation of at least one of the cathode (802), stage (801) and shielding plate (805) so that sputtered particles impinging at an angle formed with respect to a normal line of the substrate (804) of 0° or more and 50° or less out of sputtered particles generated from the target (803a) during sputtering are made to impinge on the substrate (804).
摘要:
A sputtering apparatus includes a target electrode capable of mounting a target, a first support member which supports the target electrode, a magnet unit which forms a magnetic field on a surface of the target, a second support member which supports the magnet unit, and a force generation portion which is provided between the first support member and the second support member, and generates a second force in a direction opposite to a first force that acts on the second support member by an action of the magnetic field formed between the target and the magnet unit, wherein the second force has a magnitude which increases as the magnet unit comes closer to the target electrode.
摘要:
The present invention is directed to align crystal c-axes in magnetic layers near two opposed junction wall faces of a magnetoresistive element so as to be almost perpendicular to the junction wall faces. A magnetic sensor stack body has, on a substrate, a magnetoresistive element whose electric resistance fluctuates when a bias magnetic field is applied and, on sides of opposed junction wall faces of the magnetoresistive element, field regions including magnetic layers for applying the bias magnetic field to the element. The magnetoresistive element has at least a ferromagnetic stack on a part of an antiferromagnetic layer, and width of an uppermost face of the ferromagnetic stack along a direction in which the junction wall faces are opposed to each other is smaller than width of an uppermost face of the antiferromagnetic layer in the same direction.