Influence of Zn on magnetocaloric effect in (0.95)La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/Ni{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} ceramic composites

Journal Article · Tue Sep 15 00:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.03.009· OSTI ID:22475869

Khan, Azmat Ali ^[1]; Park, K. Y.; Lee, Seung Rok ^[2]; Ahmed, Faheem ^[3]

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1. Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451 (Saudi Arabia)
2. School of Materials Science and Engineering, Changwon National University, Changwon 641-773 (Korea, Republic of)
3. College of Science and General Studies, Alfaisal University, Riyadh 11533 (Saudi Arabia)

Highlights: • Synthesis of magnetic ceramic composites. • Magnetization of dual phase ceramics. • Magnetic entropy change in (0.95)La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/(0.05)Ni{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} solid solution. - Abstract: We report the magnetic and magnetocaloric properties of (0.95)La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/(0.05)Ni{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (x = 0.0, 0.1, 0.3, and 0.5) ceramic composites. The composite samples with nominal compositions were prepared using the conventional solid-state reaction method. The phase purity and structure were confirmed by using X-ray diffraction. Temperature dependent magnetization measurements and Arrott analysis reveal second order of magnetic phase transition in the composite samples. A maximum in magnetic entropy change of ∼0.75 J/kg K at 1 T has been observed in (0.95)La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/(0.05)NiFe{sub 2}O{sub 4} sample. The values of magnetic entropy change of these composites make them attractive for potential applications. These composite samples may consider as potential material for magnetic refrigeration near room temperature.

• OSTI ID: 22475869
• Journal Information: Materials Research Bulletin, Vol. 69; Conference: ISFM 2014: 6. international symposium on functional materials, Singapore (Singapore), 4-7 Aug 2014; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
COMPOSITE MATERIALS
ENTROPY
FERRITES
IMPURITIES
LANTHANUM COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANATES
MICROSTRUCTURE
NICKEL COMPOUNDS
PHASE TRANSFORMATIONS
SOLID SOLUTIONS
STRONTIUM COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K
X-RAY DIFFRACTION
ZINC ADDITIONS
ZINC COMPOUNDS