Magnetic characterization of microcrystalline Na3Ln0.99−xEr0.01Crx(PO4)2 orthophosphates synthesized by Pechini method (Ln = La, Gd)

Sławomir M. Kaczmarek , Grzegorz Leniec , Hubert Fuks , Tomasz Skibiński , Aleksandra Pelczarska , Patrycja Godlewska , Jerzy Hanuza , Irena Szczygieł

Abstract

Na3Ln(PO4)2 orthophosphates (Ln = La, Gd) doped with Er3+ and co-doped with Cr3+ ions were synthesized by Pechini method and characterized by electron paramagnetic resonance (EPR) and magnetic susceptibility measurements. Low temperature EPR spectra were detected and analyzed in terms of temperature dependence and the structure of the obtained materials. They show that erbium and chromium ions substitute Ln3+ and also Na+ ions or Na+ channels forming complex EPR spectra. Both kinds of ions reveal ferromagnetic type of interaction which shows some anomaly at the temperature between 10 K and 15 K. Magnetic susceptibility reveals a weak antiferromagnetic kind of interaction dominating in the whole temperature range, from 3.5 to 300 K.
Author Sławomir M. Kaczmarek - [West Pomeranian University of Technology, Szczecin]
Sławomir M. Kaczmarek,,
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, Grzegorz Leniec - [West Pomeranian University of Technology, Szczecin]
Grzegorz Leniec,,
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, Hubert Fuks - [West Pomeranian University of Technology, Szczecin]
Hubert Fuks,,
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, Tomasz Skibiński - [West Pomeranian University of Technology, Szczecin]
Tomasz Skibiński,,
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, Aleksandra Pelczarska (EaE / IChaFT / DNCh)
Aleksandra Pelczarska,,
- Department of Non-organic Chemistry
, Patrycja Godlewska (EaE / IChaFT / DBCh)
Patrycja Godlewska,,
- Department of Bioorganic Chemistry
, Jerzy Hanuza (EaE / IChaFT / DBCh)
Jerzy Hanuza,,
- Department of Bioorganic Chemistry
, Irena Szczygieł (EaE / IChaFT / DNCh)
Irena Szczygieł,,
- Department of Non-organic Chemistry
Journal seriesMaterials Science-Poland, ISSN 2083-1331, e-ISSN 2083-134X , (A 15 pkt)
Issue year2017
Vol35
No4
Pages733-745
Publication size in sheets0.6
Keywords in Englishorthophosphates, erbium, chromium, EPR technique, magnetization measurements
DOIDOI:10.1515/msp-2017-0094
Languageen angielski
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Score (nominal)15
Score sourcejournalList
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