Next Article in Journal
Optimized Zirconia 3D Printing Using Digital Light Processing with Continuous Film Supply and Recyclable Slurry System
Previous Article in Journal
Mechanosynthesis and Thermoelectric Properties of Fe, Zn, and Cd-Doped P-Type Tetrahedrite: Cu12-xMxSb4S13
Article

EPR Spectra of Sintered Cd1−xCrxTe Powdered Crystals with Various Cr Content

1
College of Natural Sciences, University of Rzeszow, Rejtana 16a, 35-310 Rzeszow, Poland
2
Institute for Electronic Engineering, FH Joanneum, Alte Poststraße 147, 8020 Graz, Austria
3
Department of Machine Science and Fundamental Technologies, Ivan Franko Drogobych State Pedagogical University, Ivan Franko Str. 24, 82100 Drogobych, Ukraine
*
Author to whom correspondence should be addressed.
Academic Editor: Efrat Lifshitz
Materials 2021, 14(13), 3449; https://doi.org/10.3390/ma14133449
Received: 23 April 2021 / Revised: 15 June 2021 / Accepted: 18 June 2021 / Published: 22 June 2021
In this paper, we show a simple method of producing ferromagnetic materials with a Curie temperature above room temperature. The electron paramagnetic resonance (EPR) spectra of Cd1−xCrxTe (0.002 < x < 0.08) were measured with a dependence on temperature (82 K < T < 381 K). Obtained EPR lines were fitted to a Lorentz-shaped curve. The temperature dependencies of the parameters of the EPR lines, such as the peak-to-peak linewidth (Hpp), the intensity (A), as well as the resonance field (Hr), were studied. Ferromagnetism was noticed in samples at high temperatures (near room temperature). For a sample with a nominal concentration of chrome of x = 0.05, a very strong intrinsic magnetic field is observed. The value of the effective gyromagnetic factor for this sample is ge = 30 at T = 240 K. An increase of chrome concentration above x = 0.05 reduces the ferromagnetic properties considerably. Analysis of the temperature dependencies of the integral intensity of EPR spectra was carried out using the Curie–Weiss law and the paramagnetic Curie temperature was obtained. View Full-Text
Keywords: diluted magnetic semiconductors; CdTe:Cr; ferromagnetic materials; electron paramagnetic resonance; Curie temperature diluted magnetic semiconductors; CdTe:Cr; ferromagnetic materials; electron paramagnetic resonance; Curie temperature
Show Figures

Figure 1

MDPI and ACS Style

Stefaniuk, I.; Obermayr, W.; Popovych, V.D.; Cieniek, B.; Rogalska, I. EPR Spectra of Sintered Cd1−xCrxTe Powdered Crystals with Various Cr Content. Materials 2021, 14, 3449. https://doi.org/10.3390/ma14133449

AMA Style

Stefaniuk I, Obermayr W, Popovych VD, Cieniek B, Rogalska I. EPR Spectra of Sintered Cd1−xCrxTe Powdered Crystals with Various Cr Content. Materials. 2021; 14(13):3449. https://doi.org/10.3390/ma14133449

Chicago/Turabian Style

Stefaniuk, Ireneusz, Werner Obermayr, Volodymyr D. Popovych, Bogumił Cieniek, and Iwona Rogalska. 2021. "EPR Spectra of Sintered Cd1−xCrxTe Powdered Crystals with Various Cr Content" Materials 14, no. 13: 3449. https://doi.org/10.3390/ma14133449

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop