Magnetite particles 1, wherein the specific surface area of the magnetite particles by {HEAD ~ the BET method} is given by {TAIL ~ the equation} 
Magnetite particles 1 , wherein the specific surface area of the magnetite particles by { HEAD ~ the BET method } is given by { TAIL ~ the equation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL