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(I) Introduction
Superconducting Quantum Interference Device (SQUID) magnetometer is built by QUANTUM DESIGN. This apparatus integrates a SQUID detection system, a precision temperature control unit residing in the bore of a high-field superconducting magnet, and a sophisticated computer operating system.
A brief specification of this SQUID magnetometer is:
Maximum Sample Size: 9 mm
Field Uniformity: 0.01% over 4 cm
Temperature Range: 1.9-400 K (800 K with optional oven)
Horizontal & Vertical Sample Rotators
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(II) Service Items
| (1) measurement of magnetic susceptibility (2 - 400 K and 10 - 55000 Oe) |
| (2) measurement of magnetic hysteresis loop (5 - 400 K and 10 - 55000 Oe) |
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(III) Service Charge
The service charge depends on time, 1000 NTD per hour and the minimum time unit is half an hour. |
(IV)Matters needing Attention
| (1) Powdered sample has to be sealed in a capsule or a straw. |
| (2) The largest scale of the sample must be smaller than 5 mm. |
| (3) Liquid sample will not be accepted. |
| (4) Users have to clearly describe whether their samples are radioactive, poisonous, easy to oxidize, or any particular property that will contaminate the apparatus. |
| (5) Users have to clearly specify the name (must be less than 7 characters) and the components of the sample; the range of the temperature and the magnetic field. |
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