Table 1. Specifications of the magnet, use as a columnar magnet connected tandemly four (column of total 8mm in length).

φ5mm × φ1.5mm × 2mm
Neodymium	abbreviated designation	Sl
Diameter	D	5 mm
Inside diameter	ID	1.5 mm
Length	L	- mm
Wide	W	- mm
High	H	2 mm
Error +/−	D	0.1 mm
	ID	0.1 mm
	L	- mm
	W	- mm
	H	0.1 mm
Magnetization	M	2 mm
Weight	Net	0.000268 kg
Surface treatment	NiCuNi	12 μm
Surface maginduction	B	304 mT
Adsorption power	F	0.383 kgf
Oppoint maginduc	Bd	709.2 mT
Total flux	φo	0.00001267 Wb
Coefficient	Pc	1.53 Pc
Upper limit temp	Tw	90 °C
Lower limit temp	Tw	- °C
Materials	Neodymium	35
Residual magnetic	Br	1170-1220 mT
Coercive force	Hcb	≧868 kA/m
Inherent coercive fo	Hcj	≧955 kA/m
Max energy product	BH	263-287 kJ/m3
Temp coefficient	Br	-0.12 %/°C
	Hcj	-0.55 %/°C
Heat-resistant temp	Tw	≦80 °C
Curie point	Tc	310 °C
Density	ρ	7.5 kg/m3