Table 2.

Magnetic parameters of the bulk AMB-1 samples at different irradiation levels.

UV-B dose (J/m2)	Bc (mT)	Bcr (mT)	Bcr/Bc	Mrs/Ms	Bc, FORC (mT)	Bb 1/2 (mT)	Tv (K)	δ FC	δ ZFC	δ FC/δ ZFC
Control	22.54	34.08	1.51	0.46	34.9	1.31	102	0.216	0.098	2.19
120	35.98	44.42	1.23	0.52	43.6	1.41	102	0.222	0.076	2.93
600	36.27	47.28	1.30	0.54	46.0	1.51	102	0.197	0.072	2.73
1800	34.41	43.25	1.26	0.52	43.4	1.41	102	0.159	0.044	3.61