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Wireless and passive temperature indicator utilizing the large hysteresis of magnetic shape memory alloys

Bergmair, Bernhard and Liu, Jian and Huber, Thomas and Gutfleisch, Oliver and Suess, Dieter (2012):
Wireless and passive temperature indicator utilizing the large hysteresis of magnetic shape memory alloys.
In: Applied Physics Letters, American Institute of Physics, pp. 042412, 101, (4), ISSN 00036951,
[Online-Edition: http://dx.doi.org/10.1063/1.4739836],
[Article]

Abstract

An ultra-low cost, wireless magnetoelastic temperature indicator is presented. It comprises a magnetostrictive amorphous ribbon, a Ni-Mn-Sn-Co magnetic shape memory alloy with a highly tunable transformation temperature, and a bias magnet. It allows to remotely detect irreversible changes due to transgressions of upper or lower temperature thresholds. Therefore, the proposed temperature indicator is particularly suitable for monitoring the temperature-controlled supply chain of, e.g., deep frozen and chilled food or pharmaceuticals.

Item Type: Article
Erschienen: 2012
Creators: Bergmair, Bernhard and Liu, Jian and Huber, Thomas and Gutfleisch, Oliver and Suess, Dieter
Title: Wireless and passive temperature indicator utilizing the large hysteresis of magnetic shape memory alloys
Language: English
Abstract:

An ultra-low cost, wireless magnetoelastic temperature indicator is presented. It comprises a magnetostrictive amorphous ribbon, a Ni-Mn-Sn-Co magnetic shape memory alloy with a highly tunable transformation temperature, and a bias magnet. It allows to remotely detect irreversible changes due to transgressions of upper or lower temperature thresholds. Therefore, the proposed temperature indicator is particularly suitable for monitoring the temperature-controlled supply chain of, e.g., deep frozen and chilled food or pharmaceuticals.

Journal or Publication Title: Applied Physics Letters
Volume: 101
Number: 4
Publisher: American Institute of Physics
Uncontrolled Keywords: amorphous magnetic materials, cobalt alloys, magnetic hysteresis, magnetoelastic effects, manganese alloys, nickel alloys, shape memory effects, tin alloys
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 24 Apr 2013 08:50
Official URL: http://dx.doi.org/10.1063/1.4739836
Identification Number: doi:10.1063/1.4739836
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