Vacancy Ordering Effects in AlB2-type ErGe2-x(0.4 < x < or = 0.5)

Christensen, Jeppe (author): Stockholms universitet,Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

Lidin, Sven (author): Stockholms universitet,Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

Malaman, Bernard (author)

Venturini, Gerard (author)

(creator_code:org_t)

2008
2008
English.
In: Acta Crystallographica Section B. - 0108-7681 .- 1600-5740. ; 64:3, s. 272-280

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

In the Er-Ge system, the compostion range ErGe2 to Er2Ge3 has been investigated. Eight samples were produced by arc melting of the elements, and analyzed using X-ray powder diffraction. Nine crystal structures were found to be present in the samples. The structures are described as a homologous series and presented within the superspace formalism using the superspace group X2/m(0)0s, X representing the centring vector (½, ½, 0, ½). In this description the modulation vector q = (a* + c*) is shown to be a direct measure of the Ge content as ErGe2 - ( falls in the range to ½). The large composition range is achieved by extended vacancy ordering in the planar 63 net of Ge with subsequent relaxation.

By the author/editor: Christensen, Jep ...; Lidin, Sven; Malaman, Bernard; Venturini, Gerar ...

About the subject

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.