M91 fast hall measuring instrument - better measurement in a shorter time

      Lake Shore Patented brand new FastHall Technology eliminates the need to reverse the magnetic field , The measurement time is significantly shortened without reducing the measurement quality . in fact , A shorter measurement window will reduce the chance of sample parameters drifting due to self heating or ambient temperature changes .

      Unidirectional fields also eliminate potential sources of measurement bias due to field alignment errors , Further improve the quality of the results .

      Use FastHall, Any type of magnet can be used . For the research platform with high field superconducting magnet , Eliminating field inversion is particularly beneficial .

 

      Ideal for low flow materials

      For simple materials with high mobility , The traditional DC field Hall effect measurement is relatively simple and reliable . With the decrease of carrier mobility , Measurement difficulty increases , The accuracy is reduced . In promising new semiconductor materials （ Such as photovoltaic 、 Thermoelectric and organic materials ） This often happens in .

      AC field technology using advanced lock-in amplifiers and longer measurement windows can extract smaller Holzer Voltage signal , At present, it is usually used to explore low mobility materials . The extended measurement interval will also increase the error caused by the thermal drift effect , And it takes longer to get results —— Sometimes it takes hours .

      FastHall Technology eliminates these two problems ——  It can even accurately measure materials with extremely low fluidity in a few seconds .

 

      DC field Hall effect process requires voltage measurement when the magnetic field is set in one direction , Then reverse the field polarity and repeat the voltage measurement . The type of magnet used and the number of measurement samples required to obtain satisfactory data will affect the entire measurement time .

      HMS Technical comparison

      FastHall Measurement needs Van der Pauw Sample configuration （ Use DC Hall rod configuration for field measurement ）

      M91 At present, AC field measurement is not supported —— Please contact the Lake Shore Learn more