A portable in-situ multi-field coupling loading device for neutron scattering

Abstract

The invention discloses a portable in-situ multi-field coupling loading device for neutron scattering. The device comprises a stress loading and testing assembly, a temperature loading assembly and amagnetic field loading assembly, wherein the stress loading and testing assembly comprises four parallel guide rods for supporting; a first fixing plate, a force sensor, a left clamp, a right clamp, aspring moving plate, a spring set, a second fixing plate and a stress loader are sequentially mounted on each guide rod from left to right; the temperature loading assembly comprises a left heating ring and a right heating ring which are correspondingly arranged on clamp heads of the left clamp and the right clamp; the magnetic field loading assembly comprises a support which his provided with two vertical arms, and the two vertical arms are correspondingly arranged at the front and back of a guide rod set. According to the device, the stress, temperature and magnetic field multi-field coupling loading is developed and achieved for the first time, and a foundation is provided to multi-site in-situ research of magnetic material type magnetic structures in evolving micromechanisms; and thedevice is applicable to different neutron source neutron scattering spectrometers.

Description

technical field [0001] The present application relates to the field of sample detection auxiliary equipment in neutron scattering applications, in particular to a portable in-situ multi-field coupling loading device for neutron scattering. Background technique [0002] Neutrons have magnetic moments and can interact with the magnetic moments of magnetic atoms. Therefore, neutron scattering is an excellent tool for probing the microscopic magnetic domains and magnetic structures of materials, and studying the origin of magnetic properties and structures. However, the magnetic domains and magnetic structure of a material change according to the temperature, magnetic field and stress state it is exposed to. Especially for ferromagnetic smart alloys used as smart devices such as actuators and sensors, in order to achieve cyclic driving and repeated response, multi-field coupling loading is required for such materials. In order to study the microscopic mechanism of the magnetic...

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Problems solved by technology

Although there are temperature-magnetic field loading devices that combine cryogenic chambers with superconducting magnets, they generally cannot be used with stress loading devices due to their internal space constraints

Moreover, the related devices are bulky, difficult to disassemble and transport, and cannot be used universally on neutron scattering spectrometers of different neutron sources

Other large-scale devices are generally difficult to cooperate with, so they cannot meet the needs of some complex use environments that require multi-field coupling loading in the in-situ neutron scattering experiment to simulate the actual service process of magnetic materials

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