TABLE I.

Summary of cantilever and magnet properties. All values were measured at a field of 0 T unless otherwise indicated. All of the cantilevers studied had dimensions of 200 µm × 4 µm× 0.34 µm and unloaded resonance frequencies of f₀ ≈ 9000 Hz.

quantity	C1	C2	C3	C4	C5	C6	unit
f0	6631	6053	5054	6486	5351	4838	Hz
Q (at 0 T)	67,900	74,400	41,000	86,700	43,200	94,000	(unitless)
Q (at 5 T)	68,600	75,500	39,600	84,200	41,600		(unitless)
k	780	500	563 ± 63	780	780	703 ± 52	×10−6 N m−1
Γ	275	177	432	221	537	246	×10−15 N s m−1
Fmin	8.0	6.4	10.0	7.2	11.2	7.6	×10−18 N
lm	1500	1500	1500	1500	1500	1500	nm
loverhang	~300	~300	~300	~300	0	0	nm
wm	220	120	120	220	220	220	nm
tm	90	90	90	90	90	90	nm
tAl2O3	0	0	0	0	5.6	5.6	nm
μsat	9.71 ± 0.98	4.50 ± 0.90	3.21 ± 0.30	9.08 ± 1.36	9.05 ± 1.43	11.72 ± 1.27	×10−15 A m−2
μ0Msat	0.41 ± 0.04	0.35 ± 0.07	0.25 ± 0.03	0.38 ± 0.06	0.38 ± 0.06	0.49 ± 0.08	T
ΔN	0.81 ± 0.08	0.51a	0.93 ± 0.10	0.99 ± 0.15	0.86 ± 0.15	0.40 ± 0.10	(unitless)
${\mu }_{\text{sat}}^{\text{nominal}}$	14.18	7.73	7.73	14.18	14.18	14.18	×10−15 A m−2

^aFor this fit, ΔN was calculated from the magnet shape as described in the text.