Thermal relaxation of field-induced irreversible ferromagnetic phase in Pr-doped manganites

Joonghoe Dho; N. H. Hur

doi:10.1103/PhysRevB.67.214414

Thermal relaxation of field-induced irreversible ferromagnetic phase in Pr-doped manganites

Joonghoe Dho, N. H. Hur

Department of Physics

Korea Research Institute of Standards and Science

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

51 Scopus citations

Abstract

We have investigated the magnetic and transport properties of Pr_0.65Ca_0.35MnO₃ and Pr_0.82Na_0.18MnO₃ with almost the same doping level under various magnetic fields. Upon applying a field of 4 T, both compounds undergo a metamagnetic transition from antiferromagnetic (AFM) to ferromagnetic (FM) in the low-temperature region. The field-induced FM state is very stable for at least 10⁵ s even after removing the field. This irreversible FM behavior is different from the spontaneous FM ordering as well as the FM state in a reversible metamagnetic transition. We discuss this unusual FM phenomenon found in the Pr-doped manganites with the AFM ground state in terms of the reorientation of Mn spins pinned by localized Pr moments.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.67.214414
State	Published - 10 Jun 2003

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abstract = "We have investigated the magnetic and transport properties of Pr0.65Ca0.35MnO3 and Pr0.82Na0.18MnO3 with almost the same doping level under various magnetic fields. Upon applying a field of 4 T, both compounds undergo a metamagnetic transition from antiferromagnetic (AFM) to ferromagnetic (FM) in the low-temperature region. The field-induced FM state is very stable for at least 105 s even after removing the field. This irreversible FM behavior is different from the spontaneous FM ordering as well as the FM state in a reversible metamagnetic transition. We discuss this unusual FM phenomenon found in the Pr-doped manganites with the AFM ground state in terms of the reorientation of Mn spins pinned by localized Pr moments.",

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N2 - We have investigated the magnetic and transport properties of Pr0.65Ca0.35MnO3 and Pr0.82Na0.18MnO3 with almost the same doping level under various magnetic fields. Upon applying a field of 4 T, both compounds undergo a metamagnetic transition from antiferromagnetic (AFM) to ferromagnetic (FM) in the low-temperature region. The field-induced FM state is very stable for at least 105 s even after removing the field. This irreversible FM behavior is different from the spontaneous FM ordering as well as the FM state in a reversible metamagnetic transition. We discuss this unusual FM phenomenon found in the Pr-doped manganites with the AFM ground state in terms of the reorientation of Mn spins pinned by localized Pr moments.

AB - We have investigated the magnetic and transport properties of Pr0.65Ca0.35MnO3 and Pr0.82Na0.18MnO3 with almost the same doping level under various magnetic fields. Upon applying a field of 4 T, both compounds undergo a metamagnetic transition from antiferromagnetic (AFM) to ferromagnetic (FM) in the low-temperature region. The field-induced FM state is very stable for at least 105 s even after removing the field. This irreversible FM behavior is different from the spontaneous FM ordering as well as the FM state in a reversible metamagnetic transition. We discuss this unusual FM phenomenon found in the Pr-doped manganites with the AFM ground state in terms of the reorientation of Mn spins pinned by localized Pr moments.

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Thermal relaxation of field-induced irreversible ferromagnetic phase in Pr-doped manganites

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