New higher field strength vibrating sample magnetometer
Model 7404 VSM with new, higher-field variable-gap 4-inch electromagnetThe Lake Shore Model 7404 Vibrating Sample Magnetometer (VSM) system is now available with a new, higher-field variable-gap 4-inch electromagnet and 2.5 kW bipolar power supply. Typical maximum field strengths to 2.17 T at room temperature and 1.18 T with variable temperature options installed are now achievable versus 1.8 T and 0.9 T, respectively, with the previous generation electromagnet and power supply. The additional field strength provides a more cost-effective solution for those requiring field strengths that were previously only achievable with a larger electromagnet-based VSM system.
Lake Shore offers a full line of VSM systems: 4-, 7-, and 10-inch electromagnet-based configurations provide maximum field strengths to 2.17 T, 2.3 T, and 3.1 T, respectively. The VSM systems feature a noise floor of 1 × 10-7 emu at 10 s/point, 4 × 10-7 emu at 1 s/point, and 7.5 × 10-7 emu at 0.1 s/point sampling. In addition to providing the lowest noise floor, the VSMs offer a stability of 0.05% per day — the most stable electromagnet-based VSM available today. Variable temperature options provide for measurements from 4.2 K to 1,273 K. Vector/torque and automated sample rotation options extend the utility of the 7400 series VSM for magnetic anisotropy studies. The 7400 series VSM accurately and quickly measures major and minor hysteresis loops, remanence curves, and much more under full software automation.
Typical materials characterized in Lake Shore VSM systems include a variety of particulate and continuous magnetic media materials, flexible media, magneto-optical materials, and sputtered and plated thin film materials, including multilayer GMR, CMR, exchange-bias, and spin valve materials. They are ideal for materials research and development, quality control, and production testing applications.
For more information on the Model 7404 VSM system, please contact: 
Lake Shore Cryotronics, Inc., 575 McCorkle Boulevard, Westerville OH, 43082;
Tel: (614) 891-2244; Fax: (614) 818-1600; E-mail: