The MTJ free layer rotates in response to switching in {HEAD ~ the CPP free layer} because of {TAIL ~ a large demagnetization field} exerted by the CPP free layer 
The MTJ free layer rotates in response to switching in { HEAD ~ the CPP free layer } because of { TAIL ~ a large demagnetization field } exerted by the CPP free layer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH