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Literature DB >> 19792381

Potassium under pressure: a pseudobinary ionic compound.

M Marqués¹, G J Ackland, L F Lundegaard, G Stinton, R J Nelmes, M I McMahon, J Contreras-García.

Abstract

Experimentally, we have found that among the "complicated" phases of potassium at intermediate pressures is one which has the same space group as the double hexagonal-close-packed structure, although its atomic coordination is completely different. Calculations on this P6(3)/mmc (hP4) structure as a function of pressure show three isostructural transitions and three distinctive types of chemical bonding: free electron, ionic, and metallic. Interestingly, relationships between localized metallic structures and ionic compounds are found.

Entities: Chemical Gene

Year: 2009 PMID： 19792381 DOI： 10.1103/PhysRevLett.103.115501

Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161

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Cited

8 in total

1. Extraordinarily complex crystal structure with mesoscopic patterning in barium at high pressure.

Authors: I Loa; R J Nelmes; L F Lundegaard; M I McMahon
Journal: Nat Mater Date: 2012-06-10 Impact factor: 43.841

2. On the chain-melted phase of matter.

Authors: Victor Naden Robinson; Hongxiang Zong; Graeme J Ackland; Gavin Woolman; Andreas Hermann
Journal: Proc Natl Acad Sci U S A Date: 2019-04-11 Impact factor: 11.205

3. On understanding the chemical origin of band gaps.

Authors: J Contreras-García; Carlos Cardenas
Journal: J Mol Model Date: 2017-08-25 Impact factor: 1.810

4. Towards a generalized vision of oxides: disclosing the role of cations and anions in determining unit-cell dimensions.

Authors: Angel Vegas; Maurizio Mattesini
Journal: Acta Crystallogr B Date: 2010-05-06

Potassium under pressure: a pseudobinary ionic compound.

1. Extraordinarily complex crystal structure with mesoscopic patterning in barium at high pressure.

2. On the chain-melted phase of matter.

3. On understanding the chemical origin of band gaps.

4. Towards a generalized vision of oxides: disclosing the role of cations and anions in determining unit-cell dimensions.

5. Pressure dependent half-metallic ferromagnetism in inverse Heusler alloy Fe₂CoAl: a DFT+U calculations.

6. Pressure-induced planar N6 rings in potassium azide.

7. From ELF to compressibility in solids.

8. Comparison Between Electride Characteristics of Li₃@B₄₀ and Li₃@C₆₀.