Isotope-driven perturbation of the ground-state properties in (Sm, Gd)-Sr manganites near the half-doped hole concentration

I. Isaac; J. Jung; J. P. Franck; M. Abdelhadi

doi:10.1103/PhysRevB.70.212410

Isotope-driven perturbation of the ground-state properties in (Sm, Gd)-Sr manganites near the half-doped hole concentration

I. Isaac^*
, J. Jung
, J. P. Franck
, M. Abdelhadi

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We report on the effect of isotopic exchange ¹⁶O→ ¹⁸O on the magnetic and transport properties of the ground state in (Gd_0.5Sm_0.5)_0.55Sr_0.45MnO ₃. The ground state of the ¹⁶O sample is a ferromagnetic metal. Isotopic exchange drives that state into a antiferromagnetic insulator. Moderate applied magnetic fields have little effect on both ground states. However, higher fields can restore the ferromagnetic metallic properties of the ¹⁸O sample. The high-temperature phase at that concentration shows a competition between different ordered phases as evident from the existence of a different scale transition temperature T* >T_C at which the bulk of the samples transforms into a disordered paramagnetic phase.

Original language	English
Article number	212410
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	70
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.70.212410
State	Published - Dec 2004

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Isotope-driven perturbation of the ground-state properties in (Sm, Gd)-Sr manganites near the half-doped hole concentration",

abstract = "We report on the effect of isotopic exchange 16O→ 18O on the magnetic and transport properties of the ground state in (Gd0.5Sm0.5)0.55Sr0.45MnO 3. The ground state of the 16O sample is a ferromagnetic metal. Isotopic exchange drives that state into a antiferromagnetic insulator. Moderate applied magnetic fields have little effect on both ground states. However, higher fields can restore the ferromagnetic metallic properties of the 18O sample. The high-temperature phase at that concentration shows a competition between different ordered phases as evident from the existence of a different scale transition temperature T* >TC at which the bulk of the samples transforms into a disordered paramagnetic phase.",

author = "I. Isaac and J. Jung and Franck, \{J. P.\} and M. Abdelhadi",

year = "2004",

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doi = "10.1103/PhysRevB.70.212410",

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T1 - Isotope-driven perturbation of the ground-state properties in (Sm, Gd)-Sr manganites near the half-doped hole concentration

AU - Isaac, I.

AU - Jung, J.

AU - Franck, J. P.

AU - Abdelhadi, M.

PY - 2004/12

Y1 - 2004/12

N2 - We report on the effect of isotopic exchange 16O→ 18O on the magnetic and transport properties of the ground state in (Gd0.5Sm0.5)0.55Sr0.45MnO 3. The ground state of the 16O sample is a ferromagnetic metal. Isotopic exchange drives that state into a antiferromagnetic insulator. Moderate applied magnetic fields have little effect on both ground states. However, higher fields can restore the ferromagnetic metallic properties of the 18O sample. The high-temperature phase at that concentration shows a competition between different ordered phases as evident from the existence of a different scale transition temperature T* >TC at which the bulk of the samples transforms into a disordered paramagnetic phase.

AB - We report on the effect of isotopic exchange 16O→ 18O on the magnetic and transport properties of the ground state in (Gd0.5Sm0.5)0.55Sr0.45MnO 3. The ground state of the 16O sample is a ferromagnetic metal. Isotopic exchange drives that state into a antiferromagnetic insulator. Moderate applied magnetic fields have little effect on both ground states. However, higher fields can restore the ferromagnetic metallic properties of the 18O sample. The high-temperature phase at that concentration shows a competition between different ordered phases as evident from the existence of a different scale transition temperature T* >TC at which the bulk of the samples transforms into a disordered paramagnetic phase.

UR - https://www.scopus.com/pages/publications/13844276675

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 21

M1 - 212410

ER -

Isotope-driven perturbation of the ground-state properties in (Sm, Gd)-Sr manganites near the half-doped hole concentration

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