Magnetoresistance in magnetic manganese oxide with intrinsic antiferromagnetic spin structure

Chahara, Ken‐ichi; Ohno, Toshiyuki; Kasai, Masahiro; Kozono, Y.

doi:10.1063/1.110624

Cited by 1,268 publications

(480 citation statements)

References 7 publications

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“…17 Interest in lanthanum manganite has been rekindled in the last few years due to the observation of large magnetoresistance in films deposited by pulsed laser deposition. Thin films of La-Ca-Mn-O, [18][19][20][21] La-Ba-Mn-O, 22 La-(Ca,Pb)-Mn-O, 23 La-Ce-Mn-O, 24 and La-Sr-Mn-O 25 exhibit magnetoresistance in the range of 5%-150%, which is comparable to that obtained in giant magnetoresistance (GMR) metal multilayers. Jin et al and McCormack et al reported 26,27 a "colossal" magnetoresistance of more than 100 000% for epitaxial La-Ca-Mn-O films on LaAlO 3 .…”

Section: Introductionsupporting

confidence: 53%

Correlation between structural parameters and the magnetocaloric effect in epitaxial La0.8Ca0.2MnO3/LaAlO3 thin film

Debnath

Kim

Heo

et al. 2013

Journal of Applied Physics

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Dou, S. X. (2013). Correlation between structural parameters and the magnetocaloric effect in epitaxial La0.8Ca0.2MnO3/LaAlO3 thin film. Journal of Applied Physics, 113 (6), 063508-1-063508-6. Correlation between structural parameters and the magnetocaloric effect in epitaxial La0.8Ca0.2MnO3/LaAlO3 thin film Abstract An epitaxial La0.8Ca0.2MnO3/LaAlO 3 (LCMO/LAO) thin film was fabricated using the pulsed laser deposition technique to evaluate the correlation between the crystal structure and the magnetocaloric effect. In our study, the LCMO film was 200 nm in thickness and appeared to have a strong out-of plane texture. We found that each column in the LCMO thin film layer is a domain which has a different ordering direction. These microscopic feature results in anisotropic properties of magnetization, entropy, and relative cooling power. The film exhibited a paramagnetic-to-ferromagnetic second order phase transition at 249 K. The lack of any hysteresis loss also confirmed that the material is intrinsically reversible. In addition, the large magnetization of the thin film results in an entropy change larger than those of all other perovskite type materials. Consequently, the relative cooling power is significantly enhanced. An epitaxial La 0.8 Ca 0.2 MnO 3 /LaAlO 3 (LCMO/LAO) thin film was fabricated using the pulsed laser deposition technique to evaluate the correlation between the crystal structure and the magnetocaloric effect. In our study, the LCMO film was 200 nm in thickness and appeared to have a strong out-of plane texture. We found that each column in the LCMO thin film layer is a domain which has a different ordering direction. These microscopic feature results in anisotropic properties of magnetization, entropy, and relative cooling power. The film exhibited a paramagnetic-toferromagnetic second order phase transition at 249 K. The lack of any hysteresis loss also confirmed that the material is intrinsically reversible. In addition, the large magnetization of the thin film results in an entropy change larger than those of all other perovskite type materials. Consequently, the relative cooling power is significantly enhanced. V C 2013 American Institute of Physics. [http://dx

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Section: Introductionsupporting

confidence: 53%

Correlation between structural parameters and the magnetocaloric effect in epitaxial La0.8Ca0.2MnO3/LaAlO3 thin film

Debnath

Kim

Heo

et al. 2013

Journal of Applied Physics

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“…The discovery of the unusually large change of the transport properties under external magnetic field, known as colossal magnetoresistance [2] (CMR), has been a milestone in material science. The fingerprint of some SCMs [3] is the interplay between charge, spin, lattice, and orbital ordering, which in turn leads to a remarkable sensitivity of the system to external stimuli [4].…”

Section: Introductionmentioning

confidence: 99%

Tailoring the interfacial magnetic anisotropy in multiferroic field-effect devices

et al. 2014

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Ferroelectric field-effect devices based on perovskite oxide materials offer a new possibility to exploit emergent interfacial effects such as the electrostatic modification of the transport and magnetic properties of strongly correlated materials and to prove the magneto-electric coupling at the interface between the two different ferroic materials. Here we report on the reversible modulation of the interfacial magnetic and magnetotransport properties of La 0.825 Sr 0.175 MnO 3 thin films induced by switching the ferroelectric polarization of a top PbZr 0.2 Ti 0.8 O 3 layer. Anisotropic magnetoresistance (AMR) measurements were performed applying a magnetic field H in a plane perpendicular to the current density. By rotating H from the out-of-plane towards the in-plane direction, upon the ferroelectric polarization switching, a modulation of the normalized AMR amplitude was achieved. The dynamical electrostatic coupling at the interface of the two oxides is responsible for a reconstruction of the Mn 3de g orbitals which in turn affects the surface magnetic anisotropy of the magneto-electric system. The present work might have a broader impact, including in the field of multiferroic tunnel junctions, due to a better understanding of the coupling at the interface of the two ferroic oxides where the influence of the polarization on the magnetic degree of freedom is accomplished.

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“…Self-doped lanthanum manganites, represented by the general formula La 1-x MnO 3 , are interesting because they exhibit similar properties as that of the external-doped manganites. In La 1-x MnO 3 , the lanthanum deficiency produces a mixed Mn 3+ /Mn 4+ valency similar to that in divalent substituted compounds, which could lead to the CMR effect.…”

Section: Introductionmentioning

confidence: 99%

“…Recently there has been great interest in studying the magnetoresistive properties of the doped perovskite La 1-x R x MnO 3 (R=Ba, Ca, Sr, and Pb) [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Transmission electron microscopy study of epitaxial La_0.8MnO₃thin films on SrTiO₃

Zhu

2006

Philosophical Magazine

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Magnetoresistance in magnetic manganese oxide with intrinsic antiferromagnetic spin structure

Abstract: Giant and isotropic magnetoresistance as huge as −53% was observed in magnetic manganese oxide La0.72Ca0.25MnOz films with an intrinsic antiferromagnetic spin structure. We ascribe this magnetoresistance to spin-dependent electron scattering due to spin canting of the manganese oxide.

Cited by 1,268 publications

References 7 publications

Correlation between structural parameters and the magnetocaloric effect in epitaxial La0.8Ca0.2MnO3/LaAlO3 thin film

Correlation between structural parameters and the magnetocaloric effect in epitaxial La0.8Ca0.2MnO3/LaAlO3 thin film

Tailoring the interfacial magnetic anisotropy in multiferroic field-effect devices

Transmission electron microscopy study of epitaxial La_0.8MnO₃thin films on SrTiO₃

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Magnetoresistance in magnetic manganese oxide with intrinsic antiferromagnetic spin structure

Abstract: Giant and isotropic magnetoresistance as huge as −53% was observed in magnetic manganese oxide La0.72Ca0.25MnOz films with an intrinsic antiferromagnetic spin structure. We ascribe this magnetoresistance to spin-dependent electron scattering due to spin canting of the manganese oxide.

Cited by 1,268 publications

References 7 publications

Correlation between structural parameters and the magnetocaloric effect in epitaxial La0.8Ca0.2MnO3/LaAlO3 thin film

Correlation between structural parameters and the magnetocaloric effect in epitaxial La0.8Ca0.2MnO3/LaAlO3 thin film

Tailoring the interfacial magnetic anisotropy in multiferroic field-effect devices

Transmission electron microscopy study of epitaxial La0.8MnO3thin films on SrTiO3

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Transmission electron microscopy study of epitaxial La_0.8MnO₃thin films on SrTiO₃