Results 131 to 140 of about 711 (177)

Unlocking the Potential of Mg-Doped Rare Earth Manganites: Machine Learning-Guided Synthesis and Insights into Structural and Optical Properties. [PDF]

open access: yesNanomaterials (Basel)
Ben Messaoud CL   +9 more
europepmc   +1 more source

Giant Optical Anisotropy and Visible-Frequency Epsilon-near-Zero in Hyperbolic van der Waals MoOCl<sub>2</sub>. [PDF]

open access: yesNano Lett
Ermolaev G   +16 more
europepmc   +1 more source

Optimization of Magnetic Tunnel Junction Structure through Component Analysis and Deposition Parameters Adjustment. [PDF]

open access: yesMaterials (Basel)
Ghemes C   +6 more
europepmc   +1 more source

Colossal magnetoresistance of

Physica B: Condensed Matter, 2000
Abstract Structural, magnetic and transport properties of the polycrystalline manganese perovskite La 0.96−y Nd y K 0.04 MnO 3+δ with 0⩽y⩽0.4 have been experimentally studied. A partially disordered state is created as La is substituted by Nd, reflecting the competition between the ferromagnetic double-exchange and ...
Roland Mathieu   +4 more
openaire   +1 more source

Colossal magnetoresistive manganites

Journal of Magnetism and Magnetic Materials, 1999
Abstract Magnetoelectronic features of the perovskite-type manganites are overviewed in the light of the mechanism of the colossal magnetoresistance (CMR). The essential ingredient of the CMR physics is not only the double-exchange interaction but also other competing interactions, such as ferromagnetic/antiferromagnetic superexchange interactions ...
Y Tokura, Y Tomioka
openaire   +1 more source

Colossal magnetoresistance manganites

Uspekhi Fizicheskih Nauk, 2017
Abstract We review lattice, thermodynamic, transport, high-frequency, and optical properties of Re 1 − x D x MnO
N G Bebenin, R I Zainullina, V V Ustinov
openaire   +1 more source

Is a Griffiths Phase a Prerequisite for Colossal Magnetoresistance?

Physical Review Letters, 2007
Detailed measurements of the magnetic and transport behavior of the two La(1-x)Ca(x)MnO(3) single crystals exhibiting colossal magnetoresistance are summarized. The x=0.21 sample exhibits unusual exponents (delta = 20+/-1, gamma = 1.71+/-0.1, beta = 0.09+/-0.01, T(C) = 182+/-1 K) and, more importantly, a Griffiths phase characterized by an exponent ...
Wanjun, Jiang   +4 more
openaire   +2 more sources

Lattice Effects in the Colossal-Magnetoresistance Manganites

Physical Review Letters, 1996
We study the combined influence of spin double exchange and Jahn-Teller lattice coupling to holes in the ${\mathrm{La}}_{1\ensuremath{-}x}{A}_{x}{\mathrm{MnO}}_{3}$ perovskites ( $A\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\mathrm{C}\mathrm{a},\phantom{\rule{0ex}{0ex}}\mathrm{S}\mathrm{r},\phantom{\rule{0ex}{0ex}}\mathrm{B}\mathrm{a}$).
, Röder, , Zang, , Bishop
openaire   +3 more sources

Colossal Magnetoresistance in New Manganites

MRS Proceedings, 1999
AbstractThe evolution of structural, electrical and magnetic properties with the isovalent chemical substitution of Ca2+ into the Sr2+ sites in new series of two-dimensional La1.2(Srl.8−XCax)Mn2O7 compounds (x = 0 ∼ 1.8) and three-dimensional La0.6(Sr0.4−xCax)MnO3 compounds (x = 0 ∼ 0.4) are investigated. The highest magnetoresistance (MR) ratios [ρ(0)
C. H. Shen   +4 more
openaire   +1 more source

Colossal negative magnetoresistance in an antiferromagnet

Physical Review B, 1998
The magnetization and resistivity of single crystals of the Zintl compound ${\mathrm{Eu}}_{14}{\mathrm{MnBi}}_{11}$ are measured as functions of temperature and applied magnetic field. The magnetization data show an apparent antiferromagnetic transition at ${T}_{N}=32\mathrm{K}$ even though the high-temperature susceptibility suggests that the exchange
Julia Y. Chan   +4 more
openaire   +1 more source

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