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Pregled bibliografske jedinice broj: 879321

Magnetotransport properties of La1-xCaxMnO3 (0.52 <= x <= 0.75) : Signature of phase coexistence


Čulo, Matija; Basletić, Mario; Tafra, Emil; Hamzić, Amir; Tomić, Silvia; Fischgrabe, Florian; Moshnyaga, Vasily; Korin-Hamzić, Bojana
Magnetotransport properties of La1-xCaxMnO3 (0.52


CROSBI ID: 879321 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Magnetotransport properties of La1-xCaxMnO3 (0.52 <= x <= 0.75) : Signature of phase coexistence

Autori
Čulo, Matija ; Basletić, Mario ; Tafra, Emil ; Hamzić, Amir ; Tomić, Silvia ; Fischgrabe, Florian ; Moshnyaga, Vasily ; Korin-Hamzić, Bojana

Izvornik
Thin solid films (0040-6090) 631 (2017); 205-212

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Manganites ; Charge order ; Magnetotransport ; Variable-range hopping ; CMR ; Phase coexistence

Sažetak
We report the temperature and magnetic field dependence of transport properties in epitaxial films of the manganite La1-xCaxMnO3 in the overdoped region of the phase diagram for x > 0.5, where a charge ordered (CO) and an antiferromagnetic (AF) phase are present. Resistivity, magnetoresistance and angular dependence of magnetoresistance were measured in the temperature interval 4.2K < T < 300K, for three concentrations x = 0.52, 0.58 and 0.75 and in magnetic fields up to 5 T. The semiconductor/insulator-like behavior in zero field was observed in the entire temperature range for all three concentrations x and the electric conduction, at lower temperatures, in the CO state obeys 3D Mott's variable-range hopping model. A huge negative magnetoresistance for x = 0.52 and x = 0.58, a metal-insulator transition for B > 3T for x = 0.52 and the presence of anisotropy in magnetoresistance for x = 0.52 and x = 0.58 show the fingerprints of colossal magnetoresistance (CMR) behavior implying the existence of ferromagnetic (FM) clusters. The declining influence of the FM clusters in the CO/AF part of the phase diagram with increasing x contributes to a possible explanation that a phase coexistence is the origin of the CMR phenomenon.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
HRZZ-IP-2013-11-1011 - Jako korelirani elektroni u slojnim organskim materijalima i manganitima: niskofrekventna pobuđenja i nelinearna dinamika (SCEinLOM) (Tomić, Silvia, HRZZ - 2013-11) ( POIROT)

Ustanove:
Institut za fiziku, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Mario Basletić (autor)

Avatar Url Matija Culo (autor)

Avatar Url Silvia Tomić (autor)

Avatar Url Emil Tafra (autor)

Avatar Url Bojana Hamzić (autor)

Avatar Url Amir Hamzić (autor)

Citiraj ovu publikaciju

Čulo, Matija; Basletić, Mario; Tafra, Emil; Hamzić, Amir; Tomić, Silvia; Fischgrabe, Florian; Moshnyaga, Vasily; Korin-Hamzić, Bojana
Magnetotransport properties of La1-xCaxMnO3 (0.52
Čulo, M., Basletić, M., Tafra, E., Hamzić, A., Tomić, S., Fischgrabe, F., Moshnyaga, V. & Korin-Hamzić, B. (2017) Magnetotransport properties of La1-xCaxMnO3 (0.52
@article{article, year = {2017}, pages = {205-212}, DOI = {10.1016/j.tsf.2017.04.027}, keywords = {Manganites, Charge order, Magnetotransport, Variable-range hopping, CMR, Phase coexistence}, journal = {Thin solid films}, doi = {10.1016/j.tsf.2017.04.027}, volume = {631}, issn = {0040-6090}, title = {Magnetotransport properties of La1-xCaxMnO3 (0.52
@article{article, year = {2017}, pages = {205-212}, DOI = {10.1016/j.tsf.2017.04.027}, keywords = {Manganites, Charge order, Magnetotransport, Variable-range hopping, CMR, Phase coexistence}, journal = {Thin solid films}, doi = {10.1016/j.tsf.2017.04.027}, volume = {631}, issn = {0040-6090}, title = {Magnetotransport properties of La1-xCaxMnO3 (0.52

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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