Company details

Lake Shore Cryotronics, Inc. Dec 17, 2008

Lake Shore Cryotronics, Inc. manufactures cryogenic, vertical or horizontal field magnet-based, high vacuum, and load-lock probe stations.

• Listed products

The probe stations are used for measuring magneto-transport, electrical, electro-optical, parametric, high Z, DC, RF, and microwave (up to 67 GHz) properties of materials and test devices. Features include temperatures from 1.5 K to 475 K, cryogen-free closed cycle refrigerator base, up to 2.5 T vertical or 1 T horizontal magnet fields, load-lock, vacuum to 10^-7 torr, and 4-inch wafer probe capabilities. Nanoscale electronics, quantum wires and dots, semiconductors, superconductors, and spintronic devices are typical materials measured in the probe stations.

Lake Shore Cryotronics is a leading developer of high performance tools used for the characterization of materials in temperature and magnet environments. Fully integrated hardware and software characterization systems include a full line of electromagnet and superconducting magnet-based Hall effect measurement systems for characterizing the magneto-transport properties of materials, and electromagnet-based VSM systems for characterizing the DC magnetic properties of materials. Temperature measurement products include a full line of sensors, controllers, monitors, transmitters, current sources, an AC resistance bridge, a superconducting magnet power supply, and cryogenic accessories. Magnetic measurement products include a complete line of benchtop and handheld gaussmeters, fluxmeters, Hall probes, Helmholtz coils, Hall generators, electromagnets, and electromagnet power supplies.

Recent probe station developments include the Model CRTTP6-4K closed cycle refrigerator (CCR) based station. Based on the Sumitomo 4 K base temperature CCR, the CRTTP6-4K provides efficient temperature operation and control over a temperature range of 4.5 K to 350 K without the operating expense of liquid cryogens. An optional interchangeable high temperature sample holder provides a temperature range of 50 K to 475 K. Each cryogenic stage is equipped with a sensor and heater to provide fast thermal response and rapid warm up for sample exchange – sample exchange cycle time is <3.5 h. Careful design consideration was also taken to provide a low vibration, user-friendly tool. Integrated vibration isolation and damping prevents mechanical vibration from affecting measurement performance. Sample stage vibration is limited to less than 1 µm (X, Y, and Z axes) through the full scale temperature range.

Also under development are a second CCR-based probe station, and magneto-transport and Hall effect measurement systems based on the horizontal and vertical field probe stations, respectively.
Recent additions to Lake Shore HMS include an AC current option, contact blasting, and anomalous Hall effect (AHE) capability. The AC current option allows for measurement of the Hall effect and resistivity of materials with high conductivity or low mobility, which both require the measurement of very small voltages. Contact blasting simplifies the process of forming low resistance ohmic contacts on high resistance semiconductor devices. The AHE is an alternative method for measuring magnetic hysteresis M(H) loops and magneto-transport properties of ferromagnetic semiconductors, spintronics, and other magnetic materials. Systems designed to accommodate 6-inch wafers and up to 4 samples are also available.