Magnetometer

We provide a low-temperature niobium-based SQUID magnetometer developed by SIMIT.

Application scope: Biomagnetic detection, geophysics, three-axis compensation, etc.

User customization: A variety of SQUID magnetometers can be designed to meet different application needs.

Packaging design: reliable packaging of non-magnetic materials, such as glass fiber reinforced plastic, quartz, etc.

Working conditions: The magnetometer can be directly immersed in liquid helium.

Signal readout: used for self-made readout circuit to achieve amplification and feedback, that is, to achieve SQUID flux locking loop readout

Parameter Details

Type	Type A		Type B	Type C
Chip size (mm²)	Type A-1:10×10	Type A-2: 5×5	5 × 5	5 × 3
Magnetic field sensitivity (nT/Ф 0)	0.58	1.8	1	69
Magnetic flux noise (µ ф0/√Hz)	5	5	7	10
Magnetic field noise (fT/√Hz)	2.9	9	7	690
Squid configuration	One step degree		Multi-loop	Bare washer
Inductance (pH)	350	350	320	120
Detection coil size (mm ²)	9.4 × 9.4	4.7 × 4.7	-	-
Heating resistance (Ω)	100	100	50	100
Critical current (µ a)	18	18	10	18
Junction shunt resistance (Ω)	12	12	10	7
Junction capacitance (pH)	0.45	0.45	0.45	0.45
Β l shielding coefficient	3

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