Author
G. Le Flem
Other affiliations: Centre national de la recherche scientifique
Bio: G. Le Flem is an academic researcher from University of Bordeaux. The author has contributed to research in topics: Copper & Crystal structure. The author has an hindex of 30, co-authored 125 publications receiving 2467 citations. Previous affiliations of G. Le Flem include Centre national de la recherche scientifique.
Topics: Copper, Crystal structure, Luminescence, XANES, Spectroscopy
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the Ionic conductivity of phases with general formulaLi x Ln 1/3 Nb 1− x Ti x O 3 (Ln =La, Nd) has been determined for materials with a small value of x, i.e., in composition range with a Ln1/3 nbO 3 perovskite related structure.
104 citations
TL;DR: In this paper, the origin of the optical nonlinear response has been investigated in two different types of oxide glasses and linear and non-linear refractive indices have been obtained by interferometric measurements.
Abstract: The origin of the optical non-linear response has been investigated in two different types of oxide glasses. Linear and non-linear refractive indices have been obtained by interferometric measurements. Correlations between the local structure of polarizable entities within glasses and their optical activities have been tentatively established through ab initio calculations.
95 citations
TL;DR: In this article, the thermal and optical properties of glasses of the TeO 2 | ZnO, TeO2 | Nb 2 O 5 and NbO 6 octahedra were investigated.
86 citations
TL;DR: A crystal chemistry study of the three solid solutions Na1+xZr2−xLx(PO4)3 (L = Cr, In, Yb) has been carried out as mentioned in this paper.
85 citations
TL;DR: The relationship entre structurales and magnetiques sont discutees as mentioned in this paper, and les valeurs de l'integrale d'echange calculees par la methode des developpements en serie de hautes temperatures and par la theorie des ondes de spin sont egles respectivement a −37 and −40 K.
82 citations
Cited by
More filters
TL;DR: In this paper, the polycrystalline lithium lanthanum titanate Li0.34(1)La0.5O4.94(2) showed high ionic conductivity more than 2 × 10−5 S cm−1 (D.C.A.
1,304 citations
TL;DR: This critical review provides an up-to-date survey to this new generation of multifunctional open-framework solids, classified into five different sections: magnetic, chiral, conducting, optical, and labile open-frameworks for sensing applications.
Abstract: The literature on open-framework materials has shown numerous examples of porous solids with additional structural, chemical, or physical properties. These materials show promise for applications ranging from sensing, catalysis and separation to multifunctional materials. This critical review provides an up-to-date survey to this new generation of multifunctional open-framework solids. For this, a detailed revision of the different examples so far reported will be presented, classified into five different sections: magnetic, chiral, conducting, optical, and labile open-frameworks for sensing applications. (413 references.)
989 citations
TL;DR: In this paper, the authors discuss the difference between magnetic states in 2D materials and in bulk crystals and present an overview of the 2D magnets that have been explored recently, focusing on the case of the two most studied systems-semiconducting CrI3 and metallic Fe3GeTe2.
Abstract: The family of two-dimensional (2D) materials grows day by day, hugely expanding the scope of possible phenomena to be explored in two dimensions, as well as the possible van der Waals (vdW) heterostructures that one can create. Such 2D materials currently cover a vast range of properties. Until recently, this family has been missing one crucial member: 2D magnets. The situation has changed over the past 2 years with the introduction of a variety of atomically thin magnetic crystals. Here we will discuss the difference between magnetic states in 2D materials and in bulk crystals and present an overview of the 2D magnets that have been explored recently. We will focus on the case of the two most studied systems-semiconducting CrI3 and metallic Fe3GeTe2-and illustrate the physical phenomena that have been observed. Special attention will be given to the range of new van der Waals heterostructures that became possible with the appearance of 2D magnets, offering new perspectives in this rapidly expanding field.
895 citations
TL;DR: The literature on 4f n ↔4f n −1 5d transitions of the trivalent lanthanides in inorganic compounds has been collected as mentioned in this paper from critically analyzing fd-excitation, absorption, reflection and df-emission spectra, values for the spectroscopic red shift of 5d levels and the stokes shift were determined.
853 citations
TL;DR: A critical and rigorous analysis of the increasing volume of multivalent battery research, focusing on a wide range of intercalation cathode materials and the mechanisms ofMultivalent ion insertion and migration within those frameworks.
Abstract: The rapidly expanding field of nonaqueous multivalent intercalation batteries offers a promising way to overcome safety, cost, and energy density limitations of state-of-the-art Li-ion battery technology. We present a critical and rigorous analysis of the increasing volume of multivalent battery research, focusing on a wide range of intercalation cathode materials and the mechanisms of multivalent ion insertion and migration within those frameworks. The present analysis covers a wide variety of material chemistries, including chalcogenides, oxides, and polyanions, highlighting merits and challenges of each class of materials as multivalent cathodes. The review underscores the overlap of experiments and theory, ranging from charting the design metrics useful for developing the next generation of MV-cathodes to targeted in-depth studies rationalizing complex experimental results. On the basis of our critical review of the literature, we provide suggestions for future multivalent cathode studies, including a...
838 citations