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New Optical Materials based on Rare-Earth Doped Oxyfluoride Glasses and Ceramics: Structural Studies by Electron Paramagnetic Resonance Methods

Grant number: 17/06649-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): September 01, 2017
Effective date (End): August 31, 2019
Field of knowledge:Engineering - Materials and Metallurgical Engineering
Principal Investigator:Claudio José Magon
Grantee:Carsten Doerenkamp
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass, AP.CEPID

Abstract

The development of new solid state laser hosts for high optical quality rare-earth ion doped crystals, glasses, and ceramics presents an active area of current materials research. To facilitate the design of materials with optimized emission properties, detailed structural information at the atomic level is essential, regarding the local bonding environment (siting) of the rare earth ions, their second-nearest coordination sphere, and their extent of local clustering, as well as the distribution over separate micro- or nanophases in composite materials. In this project, we seek a fundamental understanding of the spectroscopic and photophysical properties of such material systems on a structural basis, combining EPR techniques as structural tools. The systems studied are glasses and ceramics based on fluoride, fluorophosphate, fluoroborate, and fluoroaluminate compositions. To this end a comprehensive EPR strategy will be developed and applied for characterizing the local environment of the emitter ions. The structural information obtained by these approaches and its correlation with the optical materials properties will be important for developing new design strategies for high power laser materials. (AU)

Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
STEGEMANN, FRANK; BLOCK, THERESA; KLENNER, STEFFEN; ZHANG, YUEMEI; FOKWA, BONIFACE P. T.; TIMMER, ALEXANDER; MOENIG, HARRY; DOERENKAMP, CARSTEN; ECKERT, HELLMUT; JANKA, OLIVER. From 3D to 2D: Structural, Spectroscopic and Theoretical Investigations of the Dimensionality Reduction in the [PtAl2](delta-) Polyanions of the Isotypic MPtAl2 Series (M=Ca-Ba, Eu). CHEMISTRY-A EUROPEAN JOURNAL, JULY 2019. Web of Science Citations: 0.
RADZIEOWSKI, MATHIS; STEGEMANN, FRANK; DOERENKAMP, CARSTEN; MATAR, SAMIR F.; ECKERT, HELLMUT; DOSCHE, CARSTEN; WITTSTOCK, GUNTHER; JANKA, OLIVER. Correlations of Crystal and Electronic Structure via NMR and X-ray Photoelectron Spectroscopies in the RETMAI(2) (RE = Sc, Y, La-Nd, Sm, Gd-Tm, Lu; TM = Ni, Pd, Pt) Series. Inorganic Chemistry, v. 58, n. 10, p. 7010-7025, MAY 20 2019. Web of Science Citations: 1.
BENNDORF, CHRISTOPHER; DE OLIVEIRA, MARCOS; DOERENKAMP, CARSTEN; HAARMANN, FRANK; FICKENSCHER, THOMAS; KOESTERS, JUTTA; ECKERT, HELLMUT; POETTGEN, RAINER. B-11 and Y-89 solid state MAS NMR spectroscopic investigations of the layered borides YTB4 (T = Mo, W, Re). DALTON TRANSACTIONS, v. 48, n. 3, p. 1118-1128, JAN 21 2019. Web of Science Citations: 0.
EXNER, JESSICA; EUSTERWIEMANN, STEFFEN; JANKA, OLIVER; DOERENKAMP, CARSTEN; MASSOLLE, ANJA; NIEHAUS, OLIVER; DANILIUC, CONSTANTIN G.; POETTGEN, RAINER; NEUGEBAUER, JOHANNES; STUDER, ARMIDO; ECKERT, HELLMUT. Antiferromagnetic ordering based on intermolecular London dispersion interactions in amphiphilic TEMPO ammonium salts. Physical Chemistry Chemical Physics, v. 20, n. 46, p. 28979-28983, DEC 14 2018. Web of Science Citations: 0.
SCHUBERT, LEA; DOERENKAMP, CARSTEN; HAVERKAMP, SANDRA; HELETTA, LUKAS; ECKERT, HELLMUT; POETTGEN, RAINER. Sc5Pd4Si6 - crystal structure and Si-29/Sc-45 solid state MAS NMR spectroscopic investigations. DALTON TRANSACTIONS, v. 47, n. 37, p. 13025-13031, OCT 7 2018. Web of Science Citations: 1.
EUSTERWIEMANN, STEFFEN; DOERENKAMP, CARSTEN; DRESSELHAUS, THOMAS; JANKA, OLIVER; DANILIUC, CONSTANTIN G.; POETTGEN, RAINER; STUDER, ARMIDO; ECKERT, HELLMUT; NEUGEBAUER, JOHANNES. Ferro- or antiferromagnetism? Heisenberg chains in the crystal structures of verdazyl radicals. Physical Chemistry Chemical Physics, v. 20, n. 35, p. 22902-22908, SEP 21 2018. Web of Science Citations: 0.
MASSOLLE, ANJA; DRESSELHAUS, THOMAS; EUSTERWIEMANN, STEFFEN; DOERENKAMP, CARSTEN; ECKERT, HELLMUT; STUDER, ARMIDO; NEUGEBAUER, JOHANNES. Towards reliable references for electron paramagnetic resonance parameters based on quantum chemistry: the case of verdazyl radicals. Physical Chemistry Chemical Physics, v. 20, n. 11, p. 7661-7675, MAR 21 2018. Web of Science Citations: 1.
KEUTER, JAN; SCHWEDTMANN, KEVIN; HEPP, ALEXANDER; BERGANDER, KLAUS; JANKA, OLIVER; DOERENKAMP, CARSTEN; ECKERT, HELLMUT; MUECK-LICHTENFELD, CHRISTIAN; LIPS, FELICITAS. Diradicaloid or Zwitterionic Character: The Non-Tetrahedral Unsaturated Compound [Si-4[N(SiMe3) Dipp](4)] with a Butterfly-type Si-4 Substructure. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v. 56, n. 44, p. 13866-13871, OCT 23 2017. Web of Science Citations: 2.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.
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