Transport properties of systematically disordered Cr2AlC films
Transport properties of systematically disordered Cr2AlC films
Salgado Cabaco, J.; Kentsch, U.; Lindner, J.; Faßbender, J.; Leyens, C.; Bali, R.; Boucher, R.
Nano-lamellar composite materials, known as MAX-phases, can possess a combination of ceramic and metallic properties. A prototype compound is Cr2AlC, formed from a unit cell of Cr2C sandwiched be-tween atomic planes of Al. Here we observe the modifications to the structural, transport and magnetic behavior of 500 nm thick Cr2AlC after irradiation with Co+ions, and Ar+noble gas ions as control.X-ray shows that ion-irradiation induces a suppression of the 0002 reflection, indicating a deterioration of the crystal structure. Increasing the ion fluence leads to an increase of the saturation magnetization at 1.5 K, whereby both Ar+ and Co+ cause an increased magnetization, respectively to 150 kA.m−1and 190 kA.m−1, for the highest fluences used. At Co+ fluences of 5E13 ions.cm−2 the magnetoresistance (MR) shows a 2 orders of magnitude increase, up to 3%(10 T) at 100K. A similar effect also occurs for 5E12 ions.cm−2 Ar+ irradiated films, however, with a smaller MR-increase. The disordering of MAX phase films may reveal interesting spin-related transport phenomena.
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Transport properties of systematically disordered Cr2AlC films
ROBIS: 32936 is new version of this (Id 32936) publication
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Poster
84. Jahrestagung der DPG, 27.09.2021, Online, Germany
Permalink: https://www.hzdr.de/publications/Publ-32936
Publ.-Id: 32936