Approach to absolute zero

A method for approaching absolute zero using magnetic techniques was successfully turned into practice. Using magnetic fields and gadolinium sulfate, the temperature 0.0185 °K was attained.
 William Giauque United States 1933 Approach to absolute zero

A method for approaching absolute zero using magnetic techniques was successfully turned into practice. Using magnetic fields and gadolinium sulfate, the temperature 0.0185 °K was attained.