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Properties of the commercially available magnetoresistive sensor KMZ10A in the temperature range between 50 and 290 K

✍ Scribed by G Kaiser; M Thürk; P Seidel; F Dettmann; U Loreit

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
167 KB
Volume
38
Category
Article
ISSN
0011-2275

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✦ Synopsis

We have performed experimental investigations in order to determine the sensitivity and the resistance of the KMZ10A magnetoresistive (MR) sensor in the temperature range between 50 and 290 K by using a cryocooler. The sensitivity increases for a decrease of temperature whereas the resistance decreases. At 50 K the MR sensor shows 1.33 times the sensitivity that it does at 290 K. The resistance at 50 K is 0.52 times the resistance at 290 K. Noise measurements performed in a cryoperm shielding at room temperature and at 77 K in liquid nitrogen have shown that the voltage fluctuation in the white noise range of the MR sensor is equal to that of an equivalent resistor leading to a resolution of 44 pT/√Hz at room temperature and 13 pT/√Hz at 77 K.

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