دورية أكاديمية
Cs2NaAl1-xCrxF6: A family of compounds presenting magnetocaloric effect
| العنوان: | Cs2NaAl1-xCrxF6: A family of compounds presenting magnetocaloric effect |
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| المؤلفون: | Pedro, S. S., Tedesco, J. C. G., Yokaichiya, F., Brandao, P., Gomes, A. M., Landsgesell, S., Pires, M. J. M., Sosman, L. P., Mansanares, A. M., Reis, M. S., Bordallo, H. N. |
| بيانات النشر: | AMER PHYSICAL SOC |
| سنة النشر: | 2014 |
| المجموعة: | Repositório Institucional da Universidade de Aveiro (RIA) |
| مصطلحات موضوعية: | CS2NAALF6 SINGLE-CRYSTALS, MAGNETIC REFRIGERATION, CR3+ IONS, CS2NAGAF6 CRYSTALS, OPTICAL-PROPERTIES, SPECTROSCOPY, ELPASOLITES, RESONANCE, FIELD |
| الوصف: | In this paper we explore the magnetocaloric effect (MCE) of chromium-doped elpasolite Cs2NaAl1-x,CrxF6 (x = 0.01 and 0.62) single crystals. Magnetization and heat capacity data show the magnetocaloric potentials to be comparable to those of garnets, perovskites, and other fluorides, producing magnetic entropy changes of 0.5 J/kg K (x = 0.01) and 11 J/kg K (x = 0.62), and corresponding adiabatic temperature changes of 4 and 8 K, respectively. These values are for a magnetic field change of 50 kOe at a temperature around 3 K. A clear Schottky anomaly below 10 K, which becomes more apparent when an external magnetic field is applied, was observed and related to the splitting of the Cr3+ energy levels. These results hint at a new family of materials with potential wide use in cryorefrigeration. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1098-0121 |
| العلاقة: | info:eu-repo/grantAgreement/FCT/COMPETE/132936/PT; http://hdl.handle.net/10773/19603Test |
| DOI: | 10.1103/PhysRevB.90.064407 |
| الإتاحة: | https://doi.org/10.1103/PhysRevB.90.064407Test http://hdl.handle.net/10773/19603Test |
| حقوق: | openAccess |
| رقم الانضمام: | edsbas.921DA7E1 |
| قاعدة البيانات: | BASE |
| تدمد: | 10980121 |
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| DOI: | 10.1103/PhysRevB.90.064407 |