Harvesting Ambient Environmental Energy for Wireless Sensor Networks: A Survey

Table 7

Performance parameters of typical magnetic materials.

Material	B/mT	(BH)max/(kJ /m^3)	Hc	Tc/°C	Max. operating temperature/°C	Density/(kg/m^3)
Ceramics	100	26	High	460	250	4980
Alnico	130	42	Low	860	550	7200
SmCo (2:17)	350	208	High	750	300	8400
NdFeB (N38H)	450	306	High	320	120	7470