Novel non-magnetic hard boride Co5B16 synthesized under high pressure

Magnetic properties of the filled skutterudite-type structure compounds GdRu4P12 and TbRu4P12 synthesized under high pressure

Boron under Pressure: Phase Diagram and Novel High-pressure Phase

Boron has a unique chemistry, responsible for remarkable complexities even in the pure element. I review some of the history of the discovery of this element, and recent surprises found in boron under pressure. I discuss the recent discovery of a new high-pressure phase, γ-B28, consisting of icosahedral B12 clusters and B2 pairs in a NaCl-type arrangement: (B2)(B12), and displaying a significan...

CoPt hard magnetic nanoparticle films synthesized by high temperature chemical reduction

β-CaB4O7: A New Polymorph Synthesized under High-Pressure/High-Temperature Conditions

A new oxoborate β -CaB4O7 has been synthesized under high-pressure/high-temperature conditions from calcium oxide and boron oxide with a Walker-type multianvil apparatus at 7.7 GPa and 1100 ◦C. Single crystal X-ray structure determination of β -CaB4O7 revealed: Pmn21, a = 1058.4(1), b = 436.9(1), c = 419.4(1) pm, Z = 2, R1 = 0.0305, wR2 = 0.0587 (all data). The compound is isotypic to the known...

Collecting Things Under Time Pressure is Hard

We establish a scheme for showing the NP-Hardness of games with certain common mechanics including movement in three dimensions subject to gravity, ‘gathering’ items by co-locating with them, and having this collection process be subject to a time-limit. The Chinese Postman Problem (CPP) is the following: Given a mixed graph M = (V,E,A) with a cost function c defined on E ∪A, and an integer k, ...