Topic
Colossal magnetoresistance
About: Colossal magnetoresistance is a research topic. Over the lifetime, 3658 publications have been published within this topic receiving 130104 citations.
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TL;DR: In this paper, the authors explore the optimized colossal magnetoresistance (MR), i.e., higher MR with lower field, magnetotransport properties of single-crystalline perovskite manganites.
Abstract: To explore the optimized colossal magnetoresistance (MR), i.e., higher MR with lower field, magnetotransport properties of single-crystalline perovskite manganites have systematically been investigated. Near x=1/2 with intrinsic instability of charge ordering (a 1/1 ordering of Mn3+/Mn4+), the one-electron bandwidth (W) is varied by reducing the radius of R-site cation in R1−xSrxMnO3. For R=Nd, the MR behavior is rather canonical, while for R=Sm, the field-induced nonmetal-to-metal transition of the first order shows up accompanying a change in resistivity by several orders of magnitude as a result of an enhanced antiferromagnetic interaction.
93 citations
TL;DR: In this paper, the X-ray study has revealed that the samples annealed in argon have broad peaks apparently due to microstrains and crystal structure defects in the sample.
93 citations
TL;DR: In this article, a study of magnetocaloric effect in the colossal magnetoresistance material La 2/3 Ca 1/3 MnO 3 was presented, which suggests that perovskite manganites are suitable candidates as working substances in magnetic refrigeration technology.
92 citations
TL;DR: In this article, magnetoresistance measurements in very thin Pr0.67Sr0.33MnO3 films (5-15 nm) grown on LaAlO3 (001) substrates are reported, where the films are under compressive strain imposed by the lattice mismatch with the substrate.
Abstract: We report magnetoresistance (MR) measurements in very thin Pr0.67Sr0.33MnO3 films (5–15 nm) grown on LaAlO3 (001) substrates. The films are under compressive strain imposed by the lattice mismatch with the substrate. The MR ratio [R(H)−R0]/R0 is ∼92% at H=800 Oe and T=70 K when the magnetic field is applied perpendicular to the film plane and is much smaller when the magnetic field is parallel to the film plane. We suggest that the large low-field MR is due to strain-induced magnetic anisotropy and spin-dependent scattering at domain boundaries.
92 citations
TL;DR: In this paper, a study of magnetocaloric effect in the Cr-doped colossal magnetoresistance material La 0.67 Sr 0.33 Mn 0.9 Cr 0.1 O 3 was presented.
91 citations