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Naslov:Unusual magnetodielectric effects in La2CuMnO6 induced by a dynamic crossover in dielectric relaxation at TC
Avtorji:ID Pezhumkattil Palakkal, Jasnamol, Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, 695 019, India (Avtor)
ID Raj Sankar, Cheriyedath, Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, 695 019, India (Avtor)
ID Parayancheri Paulose, Ajeesh, Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, 695 019, India (Avtor)
ID Valant, Matjaž, UNG (Avtor)
ID Badasyan, Artem, UNG (Avtor)
ID Raama Varma, Manoj, Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, 695 019, India (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:A series of fixed frequency dielectric measurements shows dielectric relaxation in La2CuMnO6, with a dynamic (Arrhenius to Arrhenius) crossover at TC. The external magnetic field alters the relaxation parameters in the vicinity of crossover and induces an unusual trend in the magnetodielectric coupling around TC. A large magnetodielectric coupling of 55% (at 68 K, 4 kHz) and 61% (at 105 K, 285.8 kHz) under a small magnetic field of 5 kOe is discovered. Presence of ferromagnetic short-range correlations above TC and a sign reversal of magnetoresistance around TC are observed. Specific heat analysis revealed the presence of ferromagnetic, variable range hopping active charge localized state. The presence of ferromagnetic short-range correlations and the influence of a core-grain dominated magnetoresistance on the Maxwell-Wagner interfacial polarization are responsible for the observed large magnetodielectric effect. Both the magnetic ordering and external magnetic field control the electric dipole relaxation in the material.
Ključne besede:Double perovskite Griffiths-like phase Dielectric Magnetoresistance Magnetodielectric
Verzija publikacije:Objavljena publikacija
Leto izida:2018
Št. strani:226-233
Številčenje:2017, 100
PID:20.500.12556/RUNG-3507-06edd3fb-a186-6c85-664f-1aebccef5537 Novo okno
COBISS.SI-ID:4979195 Novo okno
DOI:10.1016/j.materresbull.2017.12.027 Novo okno
NUK URN:URN:SI:UNG:REP:AF4I0BND
Datum objave v RUNG:03.01.2018
Število ogledov:4095
Število prenosov:0
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Materials Research Bulletin
Založnik:Elsevier
Leto izida:2018
ISSN:0025-5408

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:BI-IND/15-17-002
Naslov:Dopiranje dvojnih perovskitov z elektronskimi vrzelmi za senzorske in spintronske aplikacije

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:03.01.2018

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