TY - JOUR
T1 - Torque magnetometry
T2 - investigation of the intergranular exchange interaction in longitudinal magnetic recording media
AU - Ogrin, F Y
AU - Oates, C J
AU - Lee, Stephen Leslie
PY - 2002/4
Y1 - 2002/4
N2 - We demonstrate a new method for investigation of intergranular exchange coupling in longitudinal magnetic recording media by means of torque magnetometry. The technique we use is based on an analogy with the DeltaM method where the analysis involves comparison of reversal processes in the sample with different initial magnetic states. We show that the DeltaM curve has an equivalent torque representation Deltatau which can be similarly exploited for studies on the longitudinal media. To validate the method we involve micromagnetic modeling, results of which are compared with the experimental measurements on a model CoCrPtTa media sample. (C) 2002 Elsevier Science B.V. All rights reserved.
AB - We demonstrate a new method for investigation of intergranular exchange coupling in longitudinal magnetic recording media by means of torque magnetometry. The technique we use is based on an analogy with the DeltaM method where the analysis involves comparison of reversal processes in the sample with different initial magnetic states. We show that the DeltaM curve has an equivalent torque representation Deltatau which can be similarly exploited for studies on the longitudinal media. To validate the method we involve micromagnetic modeling, results of which are compared with the experimental measurements on a model CoCrPtTa media sample. (C) 2002 Elsevier Science B.V. All rights reserved.
KW - longitudinal magnetic recording media
KW - intergranular coupling
KW - magnetocrystalline anisotropy
UR - http://www.scopus.com/inward/record.url?scp=0036530499&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1016/S0304-8853(01)01225-2
U2 - 10.1016/S0304-8853(01)01225-2
DO - 10.1016/S0304-8853(01)01225-2
M3 - Article
SN - 0304-8853
VL - 242-245
SP - 321
EP - 324
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 1
ER -