English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Growth of BaMn2As2 crystals using both MnAs and Sn fluxes is reported. Roomtemperature crystallography, anisotropic isothermal magnetization M versusfield H and magnetic susceptibility chi versus temperature T, electricalresistivity in the ab plane rho(T), and heat capacity C(T) measurements on thecrystals were carried out. The tetragonal ThCr2Si2-type structure of BaMn2As2is confirmed. After correction for traces of ferromagnetic MnAs impurity phaseusing M(H) isotherms, the inferred intrinsic chi(T) data of the crystals areanisotropic with chi_{ab}/chi_{c} \approx 7.5 at T = 2 K. The temperaturedependences of the anisotropic chi data suggest that BaMn2As2 is a collinearantiferromagnet at room temperature with the easy axis along the c axis, andwith an extrapolated Neel temperature T_N \sim 500 K. The rho(T) decreases withdecreasing T below 310 K but then increases below \sim 50 K, suggesting thatBaMn2As2 is a small band-gap semiconductor with an activation energy of order0.03 eV. The C(T) data from 2 to 5 K are consistent with this insulating groundstate, exhibiting a low temperature Sommerfeld coefficient gamma = 0.0(4)mJ/mol K^2. The Debye temperature is determined from these data to be theta_D =246(4) K. BaMn2As2 is a potential parent compound for ThCr2Si2-typesuperconductors.

Magnetic, Transport, and Thermal Properties of Single Crystals of the Layered Arsenide BaMn2As2