Transition Metal Aluminum Boride as a New Candidate for Ambient-Condition Electrochemical Ammonia Synthesis.

Achieving more meaningful N conversion by reducing the energy input and carbon footprint is now being investigated through a method of N fixation instead of the Haber-Bosch process. Unfortunately, the electrochemical N reduction reaction (NRR) method as a rising approach currently still shows low selectivity (Faradaic efficiency < 10%) and high-energy consumption [applied potential at least - 0.2 V versus the reversible hydrogen electrode (RHE)].

Controlled Shrinkage of Expanded Glass Particles in Metal Syntactic Foams.

Metal matrix syntactic foams have been fabricated via counter-gravity infiltration of a packed bed of recycled expanded glass particles (EG) with A356 aluminum alloy. Particle shrinkage was studied and has been utilized to increase the particles' strength and tailor the mechanical properties of the expanded glass/metal syntactic foam (EG-MSF). The crushing strength of particles could be doubled by shrinking them for 20 min at 700 °C.

Monoclinic PZN-8%PT [Pb(Zn(0.3066)Nb(0.6133)Ti(0.08))O(3)] at 4 K.

The structure of the relaxor ferroelectric Pb(Zn(0.3066)Nb(0.6133)Ti(0.

PbZn(1/3)Nb(2/3)O3 at 4.2 and 295 K.

The structure of the relaxor ferroelectric lead zinc niobium trioxide, Pb(Zn(1/3)Nb(2/3))O3, known as PZN, was determined at 4.2 and 295 K from very high resolution neutron powder diffraction data. The material is known for its extraordinary piezoelectric properties which are closely linked to the structure.

Group-theoretical analysis of octahedral tilting in ferroelectric perovskites.

Group-theoretical methods are used to analyze perovskite structures where both ferroelectric cation displacements and simple tilting of octahedral units are present. This results in a list of 40 different structures, each with a unique space-group symmetry. The list is compared with that of Aleksandrov & Bartolomé [Phase Transit.