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/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Neutron scattering studies have been carried out on polycrystalline samplesof a series of rare earth intermetallic compounds RCuAs$_2$ (R = Pr, Nd, Dy,Tb, Ho and Yb) as a function of temperature to determine the magneticstructures and the order parameters. These compounds crystallize in theZrCuSi$_2$ type structure, which is similar to that of the RFeAsO (space groupP4/nmm) class of iron-based superconductors. PrCuAs$_2$ develops commensuratemagnetic order with K = (0, 0, 0.5) below T$_N$ = 6.4 (2) K, with the orderedmoments pointing along the c-axis. The irreducible representation analysisshows either a ${\Gamma}$$^1_2$ or ${\Gamma}$$^1_3$ representation. NdCuAs$_2$and DyCuAs$_2$ order below T$_N$ = 3.54(5) K and T$_N$ = 10.1(2) K,respectively, with the same ordering wave vector but the moments lying in thea-b plane (with a ${\Gamma}$$^2_9$ or ${\Gamma}$$^2_{10}$ representation).TbCuAs$_2$ and HoCuAs$_2$ exhibit incommensurate magnetic structures belowT$_N$ = 9.44(7) and 4.41(2) K, respectively. For TbCuAs$_2$, two separatemagnetic ordering wave vectors are established as K$_{1(Tb)}$ =(0.240,0.155,0.48) and K$_{2(Tb)}$ = (0.205, 0.115, 0.28), whereas HoCuAs$_2$forms a single K$_{(Ho)}$ = (0.121, 0.041, 0.376) magnetic structure with3$^{rd}$ order harmonic magnetic peaks. YbCuAs$_2$ does not exhibit anymagnetic Bragg peaks at 1.5 K, while susceptibility measurements indicate anantiferromagnetic-like transition at 4 K, suggesting that either the orderingis not long range in nature or the ordered moment is below the sensitivitylimit of $\approx$ 0.2 $\mu_B$.

Magnetic structures of rare earth intermetallic compounds RCuAs$_2$ (R = Pr, Nd, Tb, Dy, Ho, and Yb)