Journal ArticleDOI
Colossal magnetoresistance in the double perovskite oxide La2CoMnO6
TLDR
In this article, the powder x-ray diffraction data confirm the single phase nature of the sample and the temperature dependence of the resistivity data shows semiconductor-like behavior in the temperature range of 5-350 K and follows variable range hopping conduction mechanism in temperature range 215 −350 K.Abstract:
Polycrystalline sample of La2CoMnO6 has been synthesized by sol-gel technique. The powder x-ray diffraction data confirm the single phase nature of the sample. This compound has monoclinic crystal structure (space group P21/n) at room temperature. The temperature dependence of magnetization in low field shows considerable variation between zero-field-cooled and field-cooled magnetization curve below ∼210 K (TC) and it follows Curie–Weiss law in the paramagnetic region. The hysteresis loop at 5 K indicates a coercive field of ∼6 kOe and remnant magnetization of ∼2.32 μB/f.u. The temperature dependence of the resistivity data shows semiconductorlike behavior in the temperature range of 5–350 K and follows variable range hopping conduction mechanism in the temperature range 215–350 K. A colossal magnetoresistance of ∼80% is observed at 5 K in an applied field of 80 kOe and MR has a negative sign.read more
Citations
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Journal ArticleDOI
Progress of Lead-Free Halide Double Perovskites
Journal ArticleDOI
Dielectric, Ferromagnetic Characteristics, and Room-Temperature Magnetodielectric Effects in Double Perovskite La2CoMnO6 Ceramics
Y. Q. Lin,Xiang Ming Chen +1 more
TL;DR: In this paper, the magnetic, dielectric, and magnetodielectric properties of La2CoMnO6 ceramics were evaluated together with the polarization-electric field hysteresis loops.
Journal ArticleDOI
An overview of the magnetoresistance phenomenon in molecular systems
TL;DR: The magnetoresistance effect in the molecular systems including small organic molecules, carbon nanotubes, graphene, conductive polymers and their nanocomposites is critically reviewed.
Journal ArticleDOI
Lead‐Free Double Perovskites for Perovskite Solar Cells
Po Kai Kung,Ming Hsien Li,Pei Ying Lin,Jia Yun Jhang,Martina Pantaler,Doru C. Lupascu,Giulia Grancini,Peter Chen +7 more
Journal ArticleDOI
Near room-temperature magnetoresistance effect in double perovskite La2NiMnO6
TL;DR: In this article, the magnetic field dependent magnetoresistance (MR) curve exhibits two distinct regions: the low-field MR which shows a rapid increase in an applied field within 200 Oe and the high-fieldMR which showed a relatively slow increase with the field increasing (more than 200
References
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Journal ArticleDOI
Intergrain tunneling magnetoresistance in polycrystals of the ordered double perovskite Sr 2 FeReO 6
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