http://ift.tt/eA8V8J Piezoelectric materials, which generate an electric current when compressed or stretched, are familiar and widely used: lighters that spark when you press a switch, microphones, sensors, motors and all kinds of other devices. Now a group of physicists has found a material with a similar property, but for magnetism. This 'piezomagnetic' material changes its magnetic properties when put under mechanical strain.
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