A test and measurement instrument, comprising at least one port configured to receive a signal from a device under test; a user interface configured to receive a user input, the user input indicating magnetic properties of a magnetic material of the device under test, and one or more processors. The one or more processors are configured to generate a hysteresis loop mask based on the magnetic properties of the magnetic material, determine whether the signal received from the device under test violates the hysteresis loop mask, and generate an alert when the signal received from the device under test violates the hysteresis loop mask. The test and measurement instrument may also include a display configured to display the hysteresis loop mask, the signal received from the device under test, and/or the alert.

A test and measurement instrument, comprising at least one port configured to receive a signal from a device under test; a user interface configured to receive a user input, the user input indicating magnetic properties of a magnetic material of the device under test, and one or more processors. The one or more processors are configured to generate a hysteresis loop mask based on the magnetic properties of the magnetic material, determine whether the signal received from the device under test violates the hysteresis loop mask, and generate an alert when the signal received from the device under test violates the hysteresis loop mask. The test and measurement instrument may also include a display configured to display the hysteresis loop mask, the signal received from the device under test, and/or the alert.

An information processing apparatus includes a memory; and a processor coupled to the memory and configured to input data of major loop regarding a hysteresis of a magnetic body, data of an initial magnetization curve of the magnetic body, and a relationship between a maximum magnetic flux density of a minor loop regarding the hysteresis and an area of the minor loop associated with the magnetic flux density; and generate data of a plurality of the minor loops using the data of the major loop, the initial magnetization curve, and the relationship between the maximum magnetic flux density of the minor loop regarding the hysteresis and the area of the minor loop associated with the magnetic flux density.

An information processing apparatus includes a memory; and a processor coupled to the memory and configured to input data of major loop regarding a hysteresis of a magnetic body, data of an initial magnetization curve of the magnetic body, and a relationship between a maximum magnetic flux density of a minor loop regarding the hysteresis and an area of the minor loop associated with the magnetic flux density; and generate data of a plurality of the minor loops using the data of the major loop, the initial magnetization curve, and the relationship between the maximum magnetic flux density of the minor loop regarding the hysteresis and the area of the minor loop associated with the magnetic flux density.

The present invention relates to a device and a method for measuring a magnetic field, wherein a spin current is injected into a magnetic body that has magnetic anisotropy using a spin Hall effect occurring in a current applied to a conductor, and the degree of shift of hysteresis in the magnetic body is calculated while reversing the magnetization of the magnetic body by a spin torque such that an external magnetic field applied to the magnetic body can be measured precisely.

The present invention relates to a device and a method for measuring a magnetic field, wherein a spin current is injected into a magnetic body that has magnetic anisotropy using a spin Hall effect occurring in a current applied to a conductor, and the degree of shift of hysteresis in the magnetic body is calculated while reversing the magnetization of the magnetic body by a spin torque such that an external magnetic field applied to the magnetic body can be measured precisely.

A magnetic-field-applying bias film exhibiting resistance to a high magnetic field has an exchange-coupled film including a permanent magnet layer and an antiferromagnetic layer stacked on the permanent magnet layer. The antiferromagnetic layer includes an X(CrMn) layer containing Cr, Mn, and one or two or more elements selected from the group consisting of platinum-group elements and Ni. The X(CrMn) layer has a first region relatively near to the permanent magnet layer and a second region relatively distant from the permanent magnet layer. Mn content in the first region is higher than Mn content in the second region.

A mobile transformer test device (10) for testing a power transformer (40) has connectors (12) for the detachable connection of the transformer test device (10) to the power transformer (40). The transformer test device (10) has a source (5) for generating a test signal. The mobile transformer test device (10) has an evaluation circuit (6) for determining, based on the test signal and a test response of the power transformer (40), information regarding a B-H curve (50, 60) of the power transformer (40).

A mobile transformer test device (10) for testing a power transformer (40) has connectors (12) for the detachable connection of the transformer test device (10) to the power transformer (40). The transformer test device (10) has a source (5) for generating a test signal. The mobile transformer test device (10) has an evaluation circuit (6) for determining, based on the test signal and a test response of the power transformer (40), information regarding a B-H curve (50, 60) of the power transformer (40).

A device of detecting magnetic characteristic change for a long material includes: an exciting coil into which the long material is inserted and which magnetizes the long material in a longitudinal direction; a detecting coil into which the long material is inserted and which detects a magnetic flux generated in the long material due to magnetization by the exciting coil; and a yoke member which has a first opening portion which is positioned on one side of the long material in the longitudinal direction and into which the long material is inserted and a second opening portion which is positioned on the other side of the long material in the longitudinal direction and into which the long material is inserted, and has a shape which is substantially axially symmetrical about an axis passing the first opening portion and the second opening portion, and the exciting coil and the detecting coil are surrounded by the yoke member, the first opening portion, and the second opening portion.