Irreversible metamagnetic transition and magnetic memory in small-bandwidth manganite Pr1-xCaxMnO3 (x=0.0-0.5)

T. Elovaara, H. Huhtinen, S. Majumdar, P. Paturi

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Abstract

The present paper reports detailed structural and magnetic characterization of the low-bandwidth manganite Pr1−xCaxMnO3 (with x = 0.0–0.5) (PCMO) polycrystalline samples. With increasing Ca content, reduction of the unit cell volume and improvement in perovskite structure symmetry was observed at room temperature. Magnetic characterization shows the signature of coexisting AFM–FM ordering and spin-glass phase at the low doping range (x = 0.0–0.2) while increased hole doping (x = 0.3–0.5) leads to charge ordering, training effect and an irreversible metamagnetic phenomenon. The large irreversible metamagnetism in the CO phase of PCMO and the corresponding spin memory effect is a direct consequence of hysteretic first-order phase transition arising from the weakening of the CO state under the external magnetic field and trapping of the spins due to a strong pinning potential in the material.
Original languageEnglish
Article number216002
JournalJournal of Physics: Condensed Matter
Volume24
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

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magnetic storage
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title = "Irreversible metamagnetic transition and magnetic memory in small-bandwidth manganite Pr1-xCaxMnO3 (x=0.0-0.5)",
abstract = "The present paper reports detailed structural and magnetic characterization of the low-bandwidth manganite Pr1−xCaxMnO3 (with x = 0.0–0.5) (PCMO) polycrystalline samples. With increasing Ca content, reduction of the unit cell volume and improvement in perovskite structure symmetry was observed at room temperature. Magnetic characterization shows the signature of coexisting AFM–FM ordering and spin-glass phase at the low doping range (x = 0.0–0.2) while increased hole doping (x = 0.3–0.5) leads to charge ordering, training effect and an irreversible metamagnetic phenomenon. The large irreversible metamagnetism in the CO phase of PCMO and the corresponding spin memory effect is a direct consequence of hysteretic first-order phase transition arising from the weakening of the CO state under the external magnetic field and trapping of the spins due to a strong pinning potential in the material.",
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Irreversible metamagnetic transition and magnetic memory in small-bandwidth manganite Pr1-xCaxMnO3 (x=0.0-0.5). / Elovaara, T.; Huhtinen, H.; Majumdar, S.; Paturi, P.

In: Journal of Physics: Condensed Matter, Vol. 24, 216002, 2012.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Irreversible metamagnetic transition and magnetic memory in small-bandwidth manganite Pr1-xCaxMnO3 (x=0.0-0.5)

AU - Elovaara, T.

AU - Huhtinen, H.

AU - Majumdar, S.

AU - Paturi, P.

PY - 2012

Y1 - 2012

N2 - The present paper reports detailed structural and magnetic characterization of the low-bandwidth manganite Pr1−xCaxMnO3 (with x = 0.0–0.5) (PCMO) polycrystalline samples. With increasing Ca content, reduction of the unit cell volume and improvement in perovskite structure symmetry was observed at room temperature. Magnetic characterization shows the signature of coexisting AFM–FM ordering and spin-glass phase at the low doping range (x = 0.0–0.2) while increased hole doping (x = 0.3–0.5) leads to charge ordering, training effect and an irreversible metamagnetic phenomenon. The large irreversible metamagnetism in the CO phase of PCMO and the corresponding spin memory effect is a direct consequence of hysteretic first-order phase transition arising from the weakening of the CO state under the external magnetic field and trapping of the spins due to a strong pinning potential in the material.

AB - The present paper reports detailed structural and magnetic characterization of the low-bandwidth manganite Pr1−xCaxMnO3 (with x = 0.0–0.5) (PCMO) polycrystalline samples. With increasing Ca content, reduction of the unit cell volume and improvement in perovskite structure symmetry was observed at room temperature. Magnetic characterization shows the signature of coexisting AFM–FM ordering and spin-glass phase at the low doping range (x = 0.0–0.2) while increased hole doping (x = 0.3–0.5) leads to charge ordering, training effect and an irreversible metamagnetic phenomenon. The large irreversible metamagnetism in the CO phase of PCMO and the corresponding spin memory effect is a direct consequence of hysteretic first-order phase transition arising from the weakening of the CO state under the external magnetic field and trapping of the spins due to a strong pinning potential in the material.

U2 - 10.1088/0953-8984/24/21/216002

DO - 10.1088/0953-8984/24/21/216002

M3 - Article

VL - 24

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

M1 - 216002

ER -