Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor

von Rohr, Fabian; Winiarski, Michał J.; Tao, Jing; Klimczuk, Tomasz; Cava, Robert Joseph

doi:10.1073/pnas.1615926113

Title: Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor

Abstract

High-entropy alloys are made from random mixtures of principal elements on simple lattices, stabilized by a high mixing entropy. The recently discovered body-centered cubic (BCC) Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor appears to display properties of both simple crystalline intermetallics and amorphous materials; e.g., it has a well-defined superconducting transition along with an exceptional robustness against disorder. Here we show that the valence electron count dependence of the superconducting transition temperature in the high-entropy alloy falls between those of analogous simple solid solutions and amorphous materials and test the effect of alloy complexity on the superconductivity. We propose high-entropy alloys as excellent intermediate systems for studying superconductivity as it evolves between crystalline and amorphous materials.

Authors:: von Rohr, Fabian; Winiarski, Michał J.; Tao, Jing; Klimczuk, Tomasz; Cava, Robert Joseph

Publication Date:: Tue Nov 01 00:00:00 EDT 2016

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundation; National Science Centre (Poland)

OSTI Identifier:: 1330724

Alternate Identifier(s):: OSTI ID: 1372433

Report Number(s):: BNL-113907-2017-JA
Journal ID: ISSN 0027-8424

Grant/Contract Number:: AC02-98CH10886; SC0012704; DEC-2012/07/E/ST3/00584; GBMF-4412

Resource Type:: Published Article

Journal Name:: Proceedings of the National Academy of Sciences of the United States of America

Additional Journal Information:: Journal Name: Proceedings of the National Academy of Sciences of the United States of America; Journal ID: ISSN 0027-8424

Publisher:: National Academy of Sciences, Washington, DC (United States)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; High-entropy Alloys; Superconductivity; Disordered Metals

Citation Formats


                    von Rohr, Fabian, Winiarski, Michał J., Tao, Jing, Klimczuk, Tomasz, and Cava, Robert Joseph. Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor.  United States: N. p., 2016. 
Web.  doi:10.1073/pnas.1615926113.

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                    von Rohr, Fabian, Winiarski, Michał J., Tao, Jing, Klimczuk, Tomasz, & Cava, Robert Joseph. Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor.  United States.  https://doi.org/10.1073/pnas.1615926113

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                    von Rohr, Fabian, Winiarski, Michał J., Tao, Jing, Klimczuk, Tomasz, and Cava, Robert Joseph. Tue .  
"Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor".  United States.  https://doi.org/10.1073/pnas.1615926113.

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@article{osti_1330724,

  title        = {Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor},

  author       = {von Rohr, Fabian and Winiarski, Michał J. and Tao, Jing and Klimczuk, Tomasz and Cava, Robert Joseph},

  abstractNote = {High-entropy alloys are made from random mixtures of principal elements on simple lattices, stabilized by a high mixing entropy. The recently discovered body-centered cubic (BCC) Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor appears to display properties of both simple crystalline intermetallics and amorphous materials; e.g., it has a well-defined superconducting transition along with an exceptional robustness against disorder. Here we show that the valence electron count dependence of the superconducting transition temperature in the high-entropy alloy falls between those of analogous simple solid solutions and amorphous materials and test the effect of alloy complexity on the superconductivity. We propose high-entropy alloys as excellent intermediate systems for studying superconductivity as it evolves between crystalline and amorphous materials.},

  doi          = {10.1073/pnas.1615926113},

  journal      = {Proceedings of the National Academy of Sciences of the United States of America},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Nov 01 00:00:00 EDT 2016},

  month        = {Tue Nov 01 00:00:00 EDT 2016}

}

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Title: Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor

Abstract

Citation Formats

Transition temperature of strong-coupled superconductors reanalyzed journal, August 1975

Empirical Relation between Superconductivity and the Number of Valence Electrons per Atom journal, January 1955

Emergence of superconductivity in BaNi 2 (Ge 1 − x P x ) 2 at a structural instability journal, September 2012

Alloy Design Strategies and Future Trends in High-Entropy Alloys journal, October 2013

Superconductivity: Basics and Applications to Magnets book, January 2015

Superconductivity and Chemistry journal, September 1997

High-Strength and High-Ductility Nanostructured and Amorphous Metallic Materials journal, June 2014

Systematic evolution of temperature-dependent resistivity in La 2 − x Sr x CuO 4 journal, November 1992

Temperature and Purity Dependence of the Superconducting Critical Field, H c 2 . III. Electron Spin and Spin-Orbit Effects journal, July 1966

A Novel Low-Density, High-Hardness, High-entropy Alloy with Close-packed Single-phase Nanocrystalline Structures journal, December 2014

McMillan's equation and the Tc of superconductors journal, April 1972

Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy journal, May 2011

Reduced superconducting transition temperatures in amorphous transition metal alloys journal, April 1977

Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes journal, May 2004

Simple rules for the understanding of Heusler compounds journal, May 2011

Colloquium : Saturation of electrical resistivity journal, October 2003

Superconductivity and magnetism in Rb x Fe 2 − y Se 2 : Impact of thermal treatment on mesoscopic phase separation journal, October 2012

High-entropy alloy: challenges and prospects journal, July 2016

Superconductivity of Ta 34 Nb 33 Hf 8 Zr 14 Ti 11 high entropy alloy from first principles calculations journal, March 2016

Structural instability and superconductivity in A-15 compounds journal, July 1975

Superconductivity in "Amorphous" Transition-Metal Alloy Films journal, January 1973

Ultrastrong ductile and stable high-entropy alloys at small scales journal, July 2015

Superconductivity: its role, its success and its setbacks in the Large Hadron Collider of CERN journal, February 2010

Accelerated exploration of multi-principal element alloys with solid solution phases journal, March 2015

Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures journal, February 2016

Enhancement of the superconducting transition temperature near a phase instability in NaxWO3 journal, August 1974

Equilibrium Thermodynamic Properties of the Mixture of Hard Spheres journal, February 1971

Superconductivity near 30 K without copper: the Ba0.6K0.4BiO3 perovskite journal, April 1988

A fracture-resistant high-entropy alloy for cryogenic applications journal, September 2014

Superconductivity in rubidium-substituted Ba 1 − x Rb x Ti 2 Sb 2 O journal, March 2014

A review of mechanical behaviour and stress effects in hard superconductors journal, July 1977

Superconductivity in the Heusler family of intermetallics journal, May 2012

Discovery of a Superconducting High-Entropy Alloy journal, September 2014

The oxygen isotope effect in Ba0.625K0.375BiO3 journal, September 1988

Critical fields, Pauli paramagnetic limiting, and material parameters of Nb 3 Sn and V 3 Si journal, May 1979

Transition Temperature of Strong-Coupled Superconductors journal, March 1968

Transition temperature of strong-coupled superconductors reanalyzed
journal, August 1975

Empirical Relation between Superconductivity and the Number of Valence Electrons per Atom
journal, January 1955

Emergence of superconductivity in BaNi $_{2}$ (Ge $_{1 - x}$ P $_{x}$ ) $_{2}$ at a structural instability
journal, September 2012

Alloy Design Strategies and Future Trends in High-Entropy Alloys
journal, October 2013

Superconductivity: Basics and Applications to Magnets
book, January 2015

Superconductivity and Chemistry
journal, September 1997

High-Strength and High-Ductility Nanostructured and Amorphous Metallic Materials
journal, June 2014

Systematic evolution of temperature-dependent resistivity in ${La}_{2 - x}$ ${Sr}_{x}$ ${CuO}_{4}$
journal, November 1992

Temperature and Purity Dependence of the Superconducting Critical Field, $H_{c 2}$ . III. Electron Spin and Spin-Orbit Effects
journal, July 1966

A Novel Low-Density, High-Hardness, High-entropy Alloy with Close-packed Single-phase Nanocrystalline Structures
journal, December 2014

McMillan's equation and the Tc of superconductors
journal, April 1972

Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy
journal, May 2011

Reduced superconducting transition temperatures in amorphous transition metal alloys
journal, April 1977

Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes
journal, May 2004

Simple rules for the understanding of Heusler compounds
journal, May 2011

Colloquium : Saturation of electrical resistivity
journal, October 2003

Superconductivity and magnetism in Rb $_{x}$ Fe $_{2 - y}$ Se $_{2}$ : Impact of thermal treatment on mesoscopic phase separation
journal, October 2012

High-entropy alloy: challenges and prospects
journal, July 2016

Superconductivity of Ta ₃₄ Nb ₃₃ Hf ₈ Zr ₁₄ Ti ₁₁ high entropy alloy from first principles calculations
journal, March 2016

Structural instability and superconductivity in A-15 compounds
journal, July 1975

Superconductivity in "Amorphous" Transition-Metal Alloy Films
journal, January 1973

Ultrastrong ductile and stable high-entropy alloys at small scales
journal, July 2015

Superconductivity: its role, its success and its setbacks in the Large Hadron Collider of CERN
journal, February 2010

Accelerated exploration of multi-principal element alloys with solid solution phases
journal, March 2015

Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures
journal, February 2016

Enhancement of the superconducting transition temperature near a phase instability in NaxWO3
journal, August 1974

Equilibrium Thermodynamic Properties of the Mixture of Hard Spheres
journal, February 1971

Superconductivity near 30 K without copper: the Ba0.6K0.4BiO3 perovskite
journal, April 1988

A fracture-resistant high-entropy alloy for cryogenic applications
journal, September 2014

Superconductivity in rubidium-substituted Ba $_{1 - x}$ Rb $_{x}$ Ti $_{2}$ Sb $_{2}$ O
journal, March 2014

A review of mechanical behaviour and stress effects in hard superconductors
journal, July 1977

Superconductivity in the Heusler family of intermetallics
journal, May 2012

Discovery of a Superconducting High-Entropy Alloy
journal, September 2014

The oxygen isotope effect in Ba0.625K0.375BiO3
journal, September 1988

Critical fields, Pauli paramagnetic limiting, and material parameters of ${Nb}_{3}$ Sn and $V_{3}$ Si
journal, May 1979

Transition Temperature of Strong-Coupled Superconductors
journal, March 1968