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Study of New Ternary Rare-Earth Intermetallic Germanides with Polar Covalent Bonding

Part of the Springer Theses Book Series

DOI: 10.1007/978-3-030-58992-9

ISBN: 978-3-030-58991-2

Publisher: Springer International Publishing - Springer Journals

Nov 17, 2020

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Chapter 1Introduction

Freccero, Riccardo

Pages: 1 –8

[The solid state is one of the fundamental states of the matter and probably the one most heavily utilized by human civilization in any period of its development, starting from the stone age, through the copper, brass and iron ages, until today. In the past the technological relevance of metals,...
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Chapter 2Experimental Methods

Freccero, Riccardo

Pages: 9 –25

[In order to evaluate the influence of the synthetic method on the stability and formation of the investigated rare earth ternary germanides, different synthetic routes and methods were followed.]
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Chapter 3Theoretical Methods

Freccero, Riccardo

Pages: 27 –46

[During the twentieth century an impressive progress in the theories and computational methods was achieved so that nowadays it is possible to obtain/predict energies and properties of many solid systems with high accuracy, assuming a model of the solid as a starting point. Anyway, the...
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Chapter 4The R2MGe6 (R = Rare Earth Metal; M = Another Metal) Compounds: An Experimental and Theoretical Study on Their Synthesis, Crystal Structure and Chemical Bonding

Freccero, Riccardo

Pages: 47 –106

[Germanium-rich compounds of general formula R2MGe6 (R = rare earth metal, M = another metal) form a numerous family, which has been investigated since the eighties of the last century up to the present ( Villars P, Cenzual K (2018/19) Pearson’s crystal data. ASM International, Ohio, USA). The...
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Chapter 5On the Existence, Crystal Structure and Physical Properties of R2Pd3Ge5 (R = Rare Earth Metal) Intermetallic Germanides

Freccero, Riccardo

Pages: 107 –133

[Ternary R–T–Ge systems (R = rare earth metal; T = transition element) are very rich in intermediate compounds, which have been extensively studied from the points of view of synthesis, crystal structure and physical properties [1–5]. During the doctorate research work, an accurate revision (see...
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Chapter 6Lu5Pd4Ge8, Lu3Pd4Ge4 and Yb2PdGe3: Three More Germanides Among Polar Intermetallics

Freccero, Riccardo

Pages: 135 –166

[The R–Pd–Ge systems (R = rare earth metal) were deeply studied during the doctorate work, in particular for alloys with at%Ge > 50% (see previous Chapters). In this framework, the crystal structure, chemical bonding and physical properties of some representatives were the main focuses for these...
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Chapter 7The R4MGe10–x (R = Rare Earth Metal; M = Li, Mg) Compounds: A New Family of Ternary Germanides

Freccero, Riccardo

Pages: 167 –184

[The new ternary germanide La4MgGe10–x was synthesized by De Negri et al. [1] during the investigation of the phase equilibria at 500 °C for the La–Mg–Ge system (see Chap. 1). During the study on the R2LiGe6 (see Chap. 4, Table 4.3) compounds, the 4:1:(10–x) stoichiometry phase turned out to form...
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Chapter 8Conclusions

Freccero, Riccardo

Pages: 185 –188

[Ternary R–M–Ge (R = rare earth metal; M = another metal) polar intermetallic germanides have been extensively studied on the basis of both experimental and theoretical methods. Many synthetic efforts have been performed in order to check the existence and crystal structure of selected...

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