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Title: Quantum critical behavior in a concentrated ternary solid solution

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep26179· OSTI ID:1256814

The face centered cubic (fcc) alloy NiCoCrx with x ≈ 1 is found to be close to the Cr concentration where the ferromagnetic transition temperature, Tc, goes to 0. Near this composition these alloys exhibit a resistivity linear in temperature to 2 K, a linear magnetoresistance, an excess –TlnT (or power law) contribution to the low temperature heat capacity, and excess low temperature entropy. All of the low temperature electrical, magnetic and thermodynamic properties of the alloys with compositions near x ≈ 1 are not typical of a Fermi liquid and suggest strong magnetic fluctuations associated with a quantum critical region. Lastly, the limit of extreme chemical disorder in this simple fcc material thus provides a novel and unique platform to study quantum critical behavior in a highly tunable system.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1256814
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English

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Cited By (11)

Uncovering electron scattering mechanisms in NiFeCoCrMn derived concentrated solid solution and high entropy alloys journal January 2019
Quantum critical behavior in the asymptotic limit of high disorder in the medium entropy alloy NiCoCr0.8 journal June 2017
Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi 2 Ir 2 O 7 journal November 2019
Temperature dependent electronic transport in concentrated solid solutions of the 3 d -transition metals Ni, Fe, Co and Cr from first principles journal October 2018
Local Structure and Short-Range Order in a NiCoCr Solid Solution Alloy journal May 2017
Hidden Mn magnetic-moment disorder and its influence on the physical properties of medium-entropy NiCoMn solid solution alloys journal January 2019
Electronic transport and phonon properties of maximally disordered alloys: From binaries to high-entropy alloys journal September 2018
Uncovering electron scattering mechanisms in NiFeCoCrMn derived concentrated solid solution and high entropy alloys text January 2019
Hidden Mn magnetic-moment disorder and its influence on the physical properties of medium-entropy NiCoMn solid solution alloys text January 2019
Possible Scale Invariant Linear Magnetoresistance in Pyrochlore Iridates Bi$_2$Ir$_2$O$_7$ text January 2013
Uncovering electron scattering mechanisms in NiFeCoCrMn derived concentrated solid solution and high entropy alloys text January 2018

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