Journal
APPLIED PHYSICS LETTERS
Volume 108, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4940912
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Funding
- National Natural Science Foundation of China (NSFC) [51572010, 51472017]
- State Key Lab of Advanced Metals and Materials [2014-ZD03]
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The near-zero temperature coefficient of resistivity (NZ-TCR) behavior is reported in the antiperovskite compounds Mn3+xNi1-xN (0 <= x <= 0.333). Our results indicate that the broad temperature range (above 275 K extending to above 220 K) of NZ-TCR is obtained by Mn doping at the Ni site. The short-range magnetic ordering is revealed by both neutron powder diffraction and inverse magnetic susceptibility. Further, we find a strong correlation between the anomalous resistivity change of Mn3+xNi1-xN from the metal-like to the NZ-TCR behavior and the lack of the long-range magnetic ordering. The possible mechanism of NZ-TCR behavior is discussed using the spin-disorder scattering model. (C) 2016 AIP Publishing LLC.
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