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Doping dependent electronic and magnetic ordering in mixed-valent La _1−x Sr _x MnO ₃ thin films

https://doi.org/10.1088/2053-1591/ac4762

Payne, J. A. ; Bryant, C. T. ; Marquez Tavera, R. ; Brown, D. T. ; Pekarek, T. M. ; Warusawithana, M. P. ( January 2022 , Materials Research Express)

Abstract
We have investigated the collective electronic and magnetic orderings of a series of La_1−xSr_xMnO₃thin films grown epitaxially strained to (001) oriented strontium titanate substrates as a function of doping,x, for 0 ≤x≤ 0.4. We find that the ground states of these crystalline thin films are, in general, consistent with that observed in bulk crystals and thin film samples synthesized under a multitude of techniques. Our systematic study, however, reveal subtle features in the temperature dependent electronic transport and magnetization measurements, which presumably arise due to Jahn-Teller type distortions in the lattice for particular doping levels. For the parent compound LaMnO₃(x= 0), we report evidence of a strain-induced ferromagnetic ordering in contrast to the antiferromagnetic ground state found in bulk crystals.

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Magnetic impurity bands in ${Ga}_{x - 1} {Mn}_{x} S$ : Towards understanding the anomalous spin-glass transition

https://doi.org/10.1103/PhysRevB.98.155206

Massey, M. C. ; Manuel, I. ; Edwards, P. S. ; Parker, D. ; Pekarek, T. M. ; Haraldsen, J. T. ( October 2018 , Physical Review B)

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Magnetic properties of the layered III-VI diluted magnetic semiconductor Ga _1−x Fe _x Te

https://doi.org/10.1063/1.4945335

Pekarek, T. M. ; Edwards, P. S. ; Olejniczak, T. L. ; Lampropoulos, C. ; Miotkowski, I. ; Ramdas, A. K. ( May 2016 , AIP Advances)

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Magnetization and spin-flip Raman scattering in Cd $_{1 - x}$ Cr $_{x}$ Se and Cd $_{1 - x}$ V $_{x}$ Se

https://doi.org/10.1103/PhysRevB.86.115213

Lu, X. ; Miotkowski, I. ; Rodriguez, S. ; Ramdas, A. K. ; Alawadhi, H. ; Pekarek, T. M. ( September 2012 , Physical Review B)

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