Gas adsorption/desorption unit, gas adsorption/desorption device and method for producing magnetic material

A gas adsorption/desorption unit comprising:

• one or more honeycomb structures including a honeycomb structure portion having an outer peripheral wall and partition walls provided on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells each extending from one end face to other end face of the honeycomb structure portion to form a flow path;
• and
• at least one induction heating coil provided around the periphery of each of the one or more honeycomb structures,
• wherein at least one of the one or more honeycomb structures comprises a magnetic material and a gas adsorbent, and
• a glass or crystal body containing Al and/or Si is disposed between the honeycomb structure and the induction heating coil.