Low-temperature sample operation bench used for soft X-ray magnetic circular dichroism (MCD)

Abstract

The present invention proposes a low-temperature sample manipulator for soft X-ray magnetic circular dichroism (XMCD), comprising: a wiring cavity with an upper end and a lower end; an XYZ three-dimensional mobile stage installed on the XMCD ultra-high vacuum cavity, and the The lower end of the wiring cavity is installed on the XYZ three-dimensional mobile platform; the liquid nitrogen cooling device is connected to the upper end of the wiring cavity and passes through the XYZ three-dimensional mobile platform; the copper cold head is fixed on the liquid nitrogen The lower end of the cooling device; the sample rack is installed at the lower end of the copper cold head and is insulated from the copper cold head; wherein, the liquid nitrogen cooling device is injected with liquid nitrogen to cool the samples on the sample rack. The low-temperature sample manipulation table suitable for soft X-ray magnetic circular dichroism absorption spectrum proposed by the embodiment of the present invention realizes cryogenic refrigeration of liquid nitrogen to the greatest extent on the premise of insulation, non-magnetism and high vacuum.

Description

technical field [0001] The invention relates to a low-temperature sample operating platform, in particular to a sample operating platform for measuring soft X-ray magnetic circular dichroism absorption spectrum under the conditions of ultra-high vacuum, strong magnetic field and low temperature. Background technique [0002] The soft X-ray magnetic circular dichroism (XMCD) experimental technique is a powerful tool for the characterization of magnetic materials, and has extensive and important applications in condensed matter physics, magnetism, and material science. This experimental technology has strict requirements on the sample environment, and needs to take into account experimental conditions such as ultra-high vacuum, strong magnetic field, and low temperature. At present, there is a lack of perfect XMCD experimental equipment in China, and there is even a lack of low-temperature sample consoles suitable for such experimental conditions. [0003] Since the sample man...

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Problems solved by technology

[0004] In short, this kind of sample console requires multiple functions, and has the characteristics of insulation, heat conduction, and non-magnetism. In addition, the limitation of ultra-high vacuum on the use of materials makes its design difficult.

At present, the commercial equipment on the market is expensive, and there is no special non-magnetic design, and the functions do not match, so it needs to be designed separately to meet the needs of XMCD experiments.

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