Evidence for ferromagnetic ordering in the MAX phase (Cr0.96Mn0.04)(2)GeC

Rivin, O. (author): Helmholtz Zentrum Berlin Mat and Energie, Germany; Nucl Res Ctr Negev, Israel

Tao, Quanzheng (author): Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten

Rosén, Johanna (author): Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten

(creator_code:org_t)

2017-04-24
2017
English.
In: Materials Research Letters. - : TAYLOR & FRANCIS INC. - 2166-3831. ; 5:7, s. 465-471

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Abstract Subject headings

Magnetic ordering in the MAX phase (Cr0.96Mn0.04)(2)GeC is investigated by means of neutron powder diffraction (NPD). Upon cooling, the temperature dependence of the magnetization shows a two-step increase. The NPD refinement reveals that the first step, at 300 K, and the second step, at 38 K, originate from a collinear magnetic structure within the MAX phase and a spinel MnCr2O4 impurity phase, respectively. The former magnetic structure is oriented perpendicular to the c axis, with a net magnetic moment of similar to 0.6(2) mu(B) per Cr/Mn atom at 50 K. This is the first direct evidence for magnetic ordering within a bulk MAX phase. [GRAPHICS] IMPACT STATEMENT Direct neutron diffraction evidence for magnetic ordering in a bulk (Cr0.96Mn0.04)(2)GeC polycrystalline MAX phase sample is presented for the first time.

By the author/editor: Rivin, O.; Caspi, E. N.; Pesach, A.; Shaked, H.; Hoser, A.; Georgii, R.; show more...; Tao, Quanzheng; Rosén, Johanna; Barsoum, M. W.; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Inorganic Chemis ...

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