Small multifunctional three-dimensional magnetoelectric test system

Abstract

The invention relates to a small multifunctional three-dimensional magnetoelectric test system. The system comprises two Helmholtz electromagnetic coils, an aluminum alloy sample table unit, a sampletable support and a sleeve, wherein each Helmholtz electromagnetic coil rotates around a self-axis; the aluminum alloy sample table unit is arranged between the two Helmholtz electromagnetic coils andcomprises a sample table joint, a connecting wire and a sample table which are arranged sequentially from top to bottom, wherein the sample table joint is connected with an external charge and / or voltage detection unit through a magnetoelectric signal lead, the connecting wire is connected with a PCB which is hollowed out in the middle, a thin-film magnetoelectric sample is placed at the hollowed-out position of the PCB, the PCB is provided with multiple electrodes, the electrodes are connected with the connecting wire, the sample table is provided with an insulated substrate, the hollowed-out position of the PCB is right opposite to at least one part of the substrate, and the substrate is used for isolating contact between the magnetoelectric sample and the sample table; the sample tablesupport is detachably arranged between the two Helmholtz electromagnetic coils, and the sample table is detachably connected with the sample table support; and the sleeve is used for providing an electrostatic shielding function and is arranged outside the sample table joint in a sleeving mode.

Description

technical field

[0001] The invention relates to a magnetoelectric performance testing device, in particular to a small multi-functional three-dimensional magnetoelectric testing system. Background technique

[0002] Magnetoelectric performance testing includes testing resistivity, magnetoresistance coefficient, Hall coefficient, dielectric constant, ferroelectric effect and other properties. Except for resistivity among the above physical properties, accurate testing of other properties requires relatively high hardware requirements for the test platform. In particular, the magnetoresistivity and Hall coefficient require an externally applied magnetic field. The design of the three-dimensional magnetic field platform is complex and expensive, and the system test platform will be relatively complicated. At present, there is no low-cost, small-scale, three-dimensional magnetoelectric test platform with multiple test functions. Contents of the invention

[0003] In order t...

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