Facilities

The SBMRI, located on campus Wangjiang of Sichuan University, accommodates a class 1000 clean room and various laboratories designed for their specific purposes. The available fabrication and characterization instruments are introduced below.

Sample and Device Fabrication

Multi-purpose growth cluster

The multi-purpose growth cluster is a very recentlypurchased vacuum system that consists of a metal deposition chamber,an organic evaporation chamber, a plasma treatment chamber and a highly specialized low-oxygen and low-hydrocarbon chamber which are centrally connected by a transfer chamber. Samples and growth materials can be inserted through and characterized in two glove boxes which are directly connected to growth cluster allowing for minimized exposure to oxygen and water. Schematics are shown in the picture. The metal deposition chamber is equipped with thermal evaporation filaments and an electron beam source. In the other two growth chambers thermal sources are employed.

Organic single crystal growth facilities

The physical vapour transport rig enables the growth of large single crystals. It is adaptable for close, semi-closed or open system single crystal growth. Of course, various transport gases can be attached to the rig as well as a turbomolecular pump depending on the molecule type one uses. The picture shows the furnace used for this system. We also use a very precise and programmable water bath which offer the possibility to grow organic single crystals with a solvent-based method. This water bath also is equipped with a cooling unit and is also shown in the photograph.

Sample Characterization Tools

Cryomagnetic systems

We are in possession of two cryomagnetic systems. The first one is a state-of-the-art cryogen-free multi-purpose system, with which various physical property can be measured and determined. Magnetic field of up to 7 T and temperatures between 1.5 and 300 K can be reached. It is equipped with a vibrating sample magnetometer, standard AC susceptibility option (up to 20 Hz) and an extended frequency AC susceptibility option (up to 200 kHz). An optical windows at the bottom of the instrument renders measurements of optically active materials possible. A custom-made sample stick is used for all kind of measurements, for instance AC current measurements or Hall effect measurements.

X-ray diffraction, SEM, HR-TEM and electrical characterisation tools

The institute is in possession of or has readily available on campus: X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM) and various electrical characterisation setups.

 
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