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Hamada, Kenichi; Wakata, Mitsunobu; Sugii, Nobuyuki; Matsuura, Kiyotaka; Kubo, Koichi; Yamauchi, H.

doi:10.1103/physrevb.48.6892

Cited by 28 publications

(10 citation statements)

References 8 publications

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“…In this structure, the Zr atoms are located at interstitial openings in the close-packed B 12 clusters [13]. In contrast, the diborides show a phase consisting of two-dimensional graphite-like monolayers of boron atoms with a honeycomb lattice, intercalated with the metal monolayers [2].…”

Section: Methodsmentioning

confidence: 99%

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Electron transport, penetration depth, and the upper critical magnetic field in ZrB12 and MgB2

Gasparov

Sidorov

Зверькова

et al. 2005

J. Exp. Theor. Phys.

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We report on the synthesis and measurements of the temperature dependence of resistivity, ρ(T ), the penetration depth, λ(T ), and upper critical magnetic field, Hc2(T ), for polycrystalline samples of dodecaboride ZrB12 and diboride MgB2. We conclude that ZrB12 as well as MgB2 behave like simple metals in the normal state with usual Bloch-Grüneisen temperature dependence of resistivity and with rather low resistive Debye temperature, TR = 280 K, for ZrB12 (as compared to MgB2 with TR = 900 K). The ρ(T ) and λ(T ) dependencies of these samples reveal a superconducting transition of ZrB12 at Tc = 6.0 K. Although a clear exponential λ(T ) dependence in MgB2 thin films and ceramic pellets was observed at low temperatures, this dependence was almost linear for ZrB12 below Tc/2. These features indicate s-wave pairing state in MgB2, whereas a d-wave pairing state is possible in ZrB12. A fit to the data gives a reduced energy gap 2∆(0)/kBTc = 1.6 for MgB2 films and pellets, in good agreement with published data for 3D π -sheets of the Fermi surface. Contrary to conventional theories we found a linear temperature dependence of Hc2(T ) (Hc2(0) = 0.15 T ) for ZrB12.

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Section: Methodsmentioning

confidence: 99%

“…Only recently, the electron transport of solid solutions Zr 1−x Sc x B 12 [13] as well as the band structure calculations of ZrB 12 [14] have been reported. Understanding the electron transport properties of the cluster borides as well as the superconductivity mechanism in these compounds is very important.…”

Section: Introductionmentioning

confidence: 99%

Electron transport, penetration depth, and the upper critical magnetic field in ZrB12 and MgB2

Gasparov

Sidorov

Зверькова

et al. 2005

J. Exp. Theor. Phys.

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“…[46,52,54,61,133,411,412] In addition, solid solutions of transition metal dodecaborides (UB 12 12 ) covering a wide range of compositions can be prepared using this method. [52,305,413] …”

Section: ) Carbothermal Reduction (Reduction Of Metal Oxides and Bormentioning

confidence: 98%

Rediscovering the Crystal Chemistry of Borides

2017

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For decades, borides have been primarily studied as crystallographic oddities. With such a wide variety of structures (a quick survey of the Inorganic Crystal Structure Database counts 1253 entries for binary boron compounds!), it is surprising that the applications of borides have been quite limited despite a great deal of fundamental research. If anything, the rich crystal chemistry found in borides could well provide the right tool for almost any application. The interplay between metals and the boron results in even more varied material's properties, many of which can be tuned via chemistry. Thus, the aim of this review is to reintroduce to the scientific community the developments in boride crystal chemistry over the past 60 years. We tie structures to material properties, and furthermore, elaborate on convenient synthetic routes toward preparing borides.

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“…Typical signatures, a sudden decrease in magnetic susceptibility, a marked increase in electrical resistivity, and a large peak in specific heat, are usually associated with certain electronic phenomena such as the charge/spin density ͑CDW/ SDW͒ waves or Jahn-Teller effect coupled with structural transition. 26,27 However, the high-T transition in Lu 2 Ir 3 Si 5 is very distinct from those in other rare-earth ternary compounds. [1][2][3][4][5][6][7][8][9] Near the transition temperature, a significant thermal hysteresis ͑ϳ40 K͒ and a broad transition width ͑ϳ15 K͒ were reported.…”

Section: Introductionmentioning

confidence: 96%

Phase transitions inLu2Ir3Si5: An experimental investigation by transport measurements

Kuo

Sivakumar

et al. 2006

Phys. Rev. B

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We have investigated the coupled structural and electronic phase transition in the rare-earth ternary silicide Lu 2 Ir 3 Si 5 by means of electrical resistivity ͑͒, Seebeck coefficient ͑S͒, as well as thermal conductivity ͑͒ measurements. Near the phase transition, pronounced anomalies in these transport properties with a significantly large hysteresis of about 40 K were noticed. By comparing the transition characteristics with the earlier reported charge-density-wave ͑CDW͒ systems R 5 Ir 4 Si 10 ͑R = rare-earth elements͒, our present investigation infers the possibility for the CDW transition accompanying a structural transition in this compound. In addition, possible mechanisms for the observed thermal hysteresis have also been proposed.

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Phase transition in theZr1−xSc

Cited by 28 publications

References 8 publications

Electron transport, penetration depth, and the upper critical magnetic field in ZrB12 and MgB2

Electron transport, penetration depth, and the upper critical magnetic field in ZrB12 and MgB2

Rediscovering the Crystal Chemistry of Borides

Phase transitions inLu2Ir3Si5: An experimental investigation by transport measurements

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