Structural, magnetic, and magnetocaloric properties of chromium doped Gd<sub>3</sub>Fe<sub>5-x</sub>Cr<sub>x</sub>O<sub>12</sub> garnet compound
نویسندگان
چکیده
The detailed structural, magnetic, and cryogenic magneto-caloric properties of chromium-substituted gadolinium iron garnet (Gd 3 Fe 5- x Cr O 12 ) nanocrystalline powders were studied using the facile autocombustion method a calcination temperature 1100 °C. X-ray diffraction pattern showed that all samples single-phase with cubic Ia3 d symmetry. field-dependent magnetization data Gd revealed ferrimagnetic ordering at low temperatures. Upon 3+ substitution, Curie reduced by 7% = 0.25 from 560 K for 0.00 sample. In field up to 5 T, maximum magnetic entropy change was observed as Δ S M ∼ 3.8 J −1 kg −Δ 3.9 sample, while relative cooling power, RCP, value 420 measured which is 10% larger than (RCP 380 ). Therefore, substituted exhibit promising performance have potential low-temperature refrigeration applications.
منابع مشابه
Ternary erbium chromium sulfides: structural relationships and magnetic properties.
Single crystals of four erbium-chromium sulfides have been grown by chemical vapor transport using iodine as the transporting agent. Single-crystal X-ray diffraction reveals that in Er(3)CrS(6) octahedral sites are occupied exclusively by Cr(3+) cations, leading to one-dimensional CrS(4)(5-) chains of edge-sharing octahedra, while in Er(2)CrS(4), Er(3+), and Cr(2+) cations occupy the available ...
متن کاملStructural, Optical, and Magnetic Properties of Zn-Doped CoFe2O4 Nanoparticles
The effect of Zn-doping in CoFe2O4 nanoparticles (NPs) through chemical co-precipitation route was investigated in term of structural, optical, and magnetic properties. Both XRD and FTIR analyses confirm the formation of cubic spinel phase, where the crystallite size changes with Zn content from 46 to 77 nm. The Scherrer method, Williamson-Hall (W-H) analysis, and size-strain plot method (SSPM)...
متن کاملCo and In Doped Ni-Mn-Ga Magnetic Shape Memory Alloys: A Thorough Structural, Magnetic and Magnetocaloric Study
In Ni-Mn-Ga ferromagnetic shape memory alloys, Co-doping plays a major role in determining a peculiar phase diagram where, besides a change in the critical temperatures, a change of number, order and nature of phase transitions (e.g., from ferromagnetic to paramagnetic or from paramagnetic to ferromagnetic, on heating) can be obtained, together with a change in the giant magnetocaloric effect f...
متن کاملSynthesis and structural properties of Mn-doped ZnO/Graphene nanocomposite
Zinc oxide (ZnO) is a promising metal oxide semiconductor with various applications, especially in the photocatalytic destruction of environmental pollutants. However, this nanoparticle has some limitations, such as poor dispersion, aggregation, and a wide energy gap. As such, the doping of metal oxide semiconductor has been strongly recommended. Addition of manganese (Mn) has proven effective ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: AIP Advances
سال: 2023
ISSN: ['2158-3226']
DOI: https://doi.org/10.1063/9.0000519