Inverse Perovskites (RE 3 N)Sn with RE = La, Ce, Pr, Nd, Sm: Preparation, Crystal Structures and Physical Properties

2019

Eur J Inorg Chem

Self Cite

Research interest in inverse perovskite nitrides, since the early beginnings in the 1940s has considerably intensified in recent years. Within the last decades exploration lead to a wide variety of new compounds, compositions and structural arrangements. Electronic properties of the novel materials span from insulating and semiconducting via semimetallic and metallic, depending on element combination. Similarly, magnetic properties qualify for various applications, according to frequently high Curie temperatures and saturation magnetizations, together with development of delicate magnetic structures and often occurring metamagnetic transitions, to give only few examples. This minireview is intended to give an overview on formation of such metal‐rich compounds with focus on chemical systems and crystal chemistry.

Section: Inverse Perovskite Nitrides Of the Rare‐earth Metalsmentioning

confidence: 56%

Metal‐Rich Ternary Perovskite Nitrides

2019

Eur J Inorg Chem

Self Cite

“…Similar homogeneity ranges were indicated for some corresponding rare-earth metal phases. [12,14] In accordance with the respective phases (Ca 3 N)E (E = Ge, Sn, Pb, as well as E = In, Tl), [18,23] the corresponding compositions (Sr 3 N)E and (Ba 3 N)E (E = Sn, Pb) with full occupation of the octahedral holes formed exclusively by A would represent electron deficient compounds, and thus should be metallic. A composition (A 3 N 2/3 )E in contrast might be regarded electron precise according to the octet rule and expected to exhibit a bandgap.…”

Section: (Ca N)e(13): Ternary Alkaline-earth Metal Perovskites With Gmentioning

confidence: 89%

“…[74] Perovskite nitrides of tin with rare-earth metal constituents in stable trivalent states (R 3 N)Sn, however, present preferably full occupation of the nitrogen site and metallic behavior. [14] For (Ca 2 EuN 0.75 )Sn all characterization techniques univocally point at a cubic Perovskite type crystal structure with defects on the nitrogen site and statistical distribution of Ca/Eu. Additionally, the semiconducting material may be understood as containing Sn 4-next to, most remarkably, both di-and trivalent europium situated on one crystallographic site.…”

Section: (Ca 2 Eun 075 )Sn: a Quaternary Alkaline-earth Metal Perovsmentioning

confidence: 96%

“…[18] The nitride chemistry of the anti-Perovskite type compounds under consideration connects to the closely related oxides, where similar compounds are known with alkalineearth and alkali metal constituents, e.g. (A(2) 3 O)E (14), [24][25][26][27][28][29] (A(1) 3 O)E (17), [30][31][32][33][34][35][36] and (A(1) 3 O)Au. [37] Associated to the fact of generally larger bandgaps of oxides compared to nitrides these oxide compounds so far are exclusively known with semiconducting properties, that means charge balance in the sense of exclusively containing close shell ions [tetrelide E (14) 4-, halide E(17) -, and auride Au -, respectively].…”

Section: Introduction and General Considerationsmentioning

confidence: 99%

“…In this review, the focus lies on alkaline-earth metal nitrides with main group constituents E (13), E (14), and E (15) and Perovskite related crystal structures. Since a large group of compounds considered crystallizes in the cubic (anti)Perovskite structure type and variants thereof, it is convenient to reflect on this crystal structure and related arrangements at this point.…”

Section: Introduction and General Considerationsmentioning

confidence: 99%

See 2 more Smart Citations

Alkaline‐earth Metal Nitrides of the Main‐Group Elements: Crystal Structures and Properties of Inverse Perovskites

Zeitschrift anorg allge chemie

2013

Self Cite

Nitrides of Non‐Main Group Elements

Höhn

Handbook of Solid State Chemistry

2017

In the last two decades, there has been a renewed interest in the chemistry of nitrides and nitridometalates. Both binary and higher nitridesMxNyhave already featured prominently as refractory materials, corrosion‐ and mechanical wear‐resistant coatings, hard materials, and hard magnets; thin films are used as diffusion barriers in integrated circuits.Whereas research on binary transition metal nitrides is mostly driven by technical and economic interests, the investigation on nitridometalates primarily focuses on exploration with respect to the development of new synthetic strategies and the design of new materials. Within this field of interest, especially the nitride chemistry of rare earth metals is still comparably undeveloped.Chemical bonding in binary nitrides varies from primarily salt‐like via covalent to metallic, whereas nitridometalates are best described as containing covalent complex anions [MxNy]z−with alkali, alkaline earth, or rare earth metal cations providing electroneutrality.