Synthesis of the New Metastable Skutterudite Compound NiSb<sub>3</sub> from Modulated Elemental Reactants

Williams, Joshua R.; Johnson, David C.

doi:10.1021/ic011131j

Cited by 22 publications

(14 citation statements)

References 6 publications

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“…The discovery of heavy fermion superconductivity45, exciton-mediated superconducting state46 and Weyl fermions47 in this system makes skutterudites a hot spot in condensed matter physics. Besides those skutterudites naturally exist, a number of new members in skutterudites have been experimentally synthesized, such as NiSb 3 48 in 2002 and RuSb 3 34 in 2004. However, those materials are composed of elements with relatively weak spin-orbit coupling (SOC).…”

mentioning

confidence: 99%

The d-p band-inversion topological insulator in bismuth-based skutterudites

Yang

Liu

2014

Sci Rep

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Skutterudites, a class of materials with cage-like crystal structure which have received considerable research interest in recent years, are the breeding ground of several unusual phenomena such as heavy fermion superconductivity, exciton-mediated superconducting state and Weyl fermions. Here, we predict a new topological insulator in bismuth-based skutterudites, in which the bands involved in the topological band-inversion process are d- and p-orbitals, which is distinctive with usual topological insulators, for instance in Bi2Se3 and BiTeI the bands involved in the topological band-inversion process are only p-orbitals. Due to the present of large d-electronic states, the electronic interaction in this topological insulator is much stronger than that in other conventional topological insulators. The stability of the new material is verified by binding energy calculation, phonon modes analysis, and the finite temperature molecular dynamics simulations. This new material can provide nearly zero-resistivity signal current for devices and is expected to be applied in spintronics devices.

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confidence: 99%

The d-p band-inversion topological insulator in bismuth-based skutterudites

Yang

Liu

2014

Sci Rep

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“…The combination of mild annealing conditions and the ability to easily modify the precursor structure allows numerous metastable compounds to be formed, which cannot be accessed using other techniques. [31][32][33][34][35] The structural complexity of products can be increased by adding additional layers with different compositions, leading to the formation of new layered solids containing constituents with different structures. These new compounds can be prepared by combining the precursor layering schemes for single component systems.…”

Section: Modulated Elemental Reactantsmentioning

confidence: 99%

“…The preparation method described above has turned out to be effective for the synthesis of metastable crystalline samples with varying chemical compositions that cannot be obtained applying classical approaches. [40][41][42][43] The key for the success of the method is a drastic reduction of the diffusion length to some nm or even down to few Å. As a consequence interdiffusion, nucleation and crystallization occur at low temperatures compared to classic approaches of preparing of inorganic solids.…”

Section: Single Component Systemsmentioning

confidence: 99%

Self-assembly of designed precursors: A route to crystallographically aligned new materials with controlled nanoarchitecture

Westover

Atkins

Falmbigl

et al. 2016

Journal of Solid State Chemistry

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Self-Assembly of designed precursors: a route to crystallographically aligned new materials with controlled na no a r c hi t e c t u r e , Journal of Solid State Chemistry, http://dx. ABSTRACTModulated elemental reactants is a method by which new and complex intergrowth compounds can be synthesized by the self-assembly of designed precursors prepared by physical vapor deposition. Careful calibration of the composition and thickness of the precursors ensures the formation of the desired product by precise control of local composition and diffusion lengths. Superstructures of increasing complexity can be realized using binary and ternary systems as starting points. The synthesis of systems based on three different binary compounds, either alloyed together or separated into distinct layers, expands the number of possible superstructures that can be formed using this technique, but provides analytical challenges. The synthesis of [(SnSe) 1.15 ] 1 ([Ta x V 1-x ]Se 2 ) 1 [(SnSe) 1.15 ] 1 ([V y Ta 1-y ]Se 2 ) 1 compound is used to illustrate the preparation of precursors and the challenges in both measuring and limiting the interdiffusion of layers during self-assembly. Systematic changes in the electrical properties of (SnSe) 1+δ (Ta x V 1-x )Se 2 alloys are observed as x is varied. The electrical resistivity of [(SnSe) 1.15 ] 1 ([Ta x V 1-x ]Se 2 ) 1 [(SnSe) 1.15 ] 1 ([V y Ta 1-y ]Se 2 ) 1 can be modeled as the two constituent layers in parallel. INTRODUCTIONNew synthetic methods have been critical both to advance scientific understanding as well as to advance technology. Traditional approaches have historically focused on using thermodynamic control to make desired products, for example growing doped silicon crystals from a melt of fixed composition. Phase diagrams were determined to understand the thermodynamic relationships between compounds. Kinetic control, typically achieved by controlling temperature as a function of time, was used to influence the microstructure. The search for new materials focused on finding reaction conditions where new compounds would be thermodynamically stable. High temperature synthesis and the growth of new materials from melts were commonly used to overcome slow solid state diffusion rates and to form single crystals for structure determination. New compounds and new phenomena are discovered whenever new approaches are developed, such as vapor transport reactions in the 1960's, [1,2] or new adaptations, such as the use of low temperature fluxes, [3,4] are explored. A grand challenge in the field of materials discovery is the development of approaches to predict new structures and the properties associated with specific compositions, and the development of approaches that will enable their synthesis. Historically, serendipity played a significant role in most new discoveries as unexpected compounds formed in reaction mixtures.

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“…The MER approach has been used successfully for the synthesis of new, metastable compounds [15][16][17][18][19][20]. This technique was also previously used to explore metastable transition metal antimonides Contents lists available at ScienceDirect journal homepage: www.elsevier.com/locate/jssc as well as various other binary and ternary compounds based on Cr-Sb, Fe-Sb, Ru-Sb, Ni-Sb or Cu-Cr-Se [21][22][23][24][25][26][27][28][29][30], making this a promising approach to the targeted compound.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Cr-rich Cr-Sb multilayer films: Syntheses of a new metastable phase using modulated elemental reactants

Regus

Mankovsky

Polesya

et al. 2015

Journal of Solid State Chemistry

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The new metastable compound Cr1+xSb with x up to 0.6 has been prepared via a thin film approach using modulated elemental reactants and investigated by in-situ X-ray reflectivity, X-ray diffraction, differential scanning calorimetry, energy dispersive X-ray analysis as well as transmission electron microscopy and atomic force microscopy. The new Cr-rich antimonide crystallizes in a structure related to the Ni2In-type structure, where the crystallographic position (1/3, 2/3, 3/4) is partially occupied by excess Cr. The elemental layers of the pristine material interdiffused significantly before Cr1+xSb crystallized. A change in the activation energy was observed for the diffusion process when crystal growth starts. First-principles electronic structure calculations provide insight into the structural stability, magnetic properties and resistivity of Cr1+xSb

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Synthesis of the New Metastable Skutterudite Compound NiSb₃ from Modulated Elemental Reactants

Cited by 22 publications

References 6 publications

The d-p band-inversion topological insulator in bismuth-based skutterudites

The d-p band-inversion topological insulator in bismuth-based skutterudites

Self-assembly of designed precursors: A route to crystallographically aligned new materials with controlled nanoarchitecture

Characterization of Cr-rich Cr-Sb multilayer films: Syntheses of a new metastable phase using modulated elemental reactants

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Synthesis of the New Metastable Skutterudite Compound NiSb3 from Modulated Elemental Reactants

Cited by 22 publications

References 6 publications

The d-p band-inversion topological insulator in bismuth-based skutterudites

The d-p band-inversion topological insulator in bismuth-based skutterudites

Self-assembly of designed precursors: A route to crystallographically aligned new materials with controlled nanoarchitecture

Characterization of Cr-rich Cr-Sb multilayer films: Syntheses of a new metastable phase using modulated elemental reactants

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Synthesis of the New Metastable Skutterudite Compound NiSb₃ from Modulated Elemental Reactants