Intriguing complex magnetism of Co in RECoAsO (RE=La, Nd, and Sm)

Magnetism of directly ordered Sm-Co clusters

Structure and Magnetism of RE PtMg ( RE = Pr , Nd , Sm ) Rainer Kraft , Gunter Kotzyba , Rolf -

New magnesium based intermetallic compounds PrPtMg, NdPtMg and SmPtMg were synthesized from the elements by reaction in sealed tantalum tubes in a high-frequency furnace. The three compounds were investigated by X-ray powder and single crystal diffraction: ZrNiAl type, space group P6̄2m, a = 752.34(8), c = 412.66(4) pm, wR2 = 0.0668, 341 F 2 values, 14 variables for PrPtMg, a = 748.80(8), c = 41...

Sm-Nd systematics of Earth are inconsistent with a superchondritic Sm/Nd ratio

The relationship between the compositions of the Earth and chondritic meteorites is at the center of many important debates. A basic assumption in most models for the Earth’s composition is that the refractory elements are present in chondritic proportions relative to each other. This assumption is now challenged by recent Nd/Nd ratio studies suggesting that the bulk silicate Earth (BSE) might ...

Sm-Nd Isotopic Data and Earth's Evolution.

Samuel A. Bowring and Todd Housh (1) report Sm/Nd isotopic data giving a wide range of initial ENd values, from +3.5 to -4 at 4.0 billion years ago (Ga) and from +4 to -7 at 3.6 Ga. Their samples were from the Acasta gneisses of northern Canada, which represent the oldest known outcrops of continental crust (2). Their modeling of the Sm-Nd isotopic data is taken to suggest that the Acasta grani...

ND/SM C students caught in middle of teachers’ strike

£ I ndeed, ‘if there is no I ultimate truth to guide and direct political activi­ ty, then ideas and convic­