Low-temperature magnetothermodynamics of Pr0.7Ca0.3MnO3

M. Roy; J. F. Mitchell; A. P. Ramirez; P. Schiffer

doi:10.1080/13642810110033818

Low-temperature magnetothermodynamics of Pr_0.7Ca_0.3MnO₃

M. Roy, J. F. Mitchell, A. P. Ramirez, P. Schiffer

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

11 Scopus citations

Abstract

We present a detailed magnetothermal study of Pr_0.7Ca_0.3MnO₃, a perovskite manganite in which an insulator-metal transition can be driven by magnetic field but also by pressure, visible light, X-rays or high currents. We find that the field-induced transition is associated with a large release of energy which accounts for its strong irreversibility. In the ferromagnetic metallic state, specific heat and magnetization measurements indicate a much smaller spin-wave stiffness than seen in any other ferromagnetic manganite, which we explain in terms of ferromagnetism among the Pr moments. The Pr ferromagnetism also appears to influence the low-temperature thermodynamic phase diagram of this material and the uniquely sensitive metastability of the insulating state.

Original language	English (US)
Pages (from-to)	417-431
Number of pages	15
Journal	Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume	81
Issue number	4
DOIs	https://doi.org/10.1080/13642810110033818
State	Published - Apr 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemical Engineering
General Physics and Astronomy

Access to Document

10.1080/13642810110033818

Cite this

@article{8b29ebfe770647af8c4b839b6e888e19,

title = "Low-temperature magnetothermodynamics of Pr0.7Ca0.3MnO3",

abstract = "We present a detailed magnetothermal study of Pr0.7Ca0.3MnO3, a perovskite manganite in which an insulator-metal transition can be driven by magnetic field but also by pressure, visible light, X-rays or high currents. We find that the field-induced transition is associated with a large release of energy which accounts for its strong irreversibility. In the ferromagnetic metallic state, specific heat and magnetization measurements indicate a much smaller spin-wave stiffness than seen in any other ferromagnetic manganite, which we explain in terms of ferromagnetism among the Pr moments. The Pr ferromagnetism also appears to influence the low-temperature thermodynamic phase diagram of this material and the uniquely sensitive metastability of the insulating state.",

author = "M. Roy and Mitchell, {J. F.} and Ramirez, {A. P.} and P. Schiffer",

year = "2001",

month = apr,

doi = "10.1080/13642810110033818",

language = "English (US)",

volume = "81",

pages = "417--431",

journal = "Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties",

issn = "1364-2812",

publisher = "Taylor and Francis Ltd.",

number = "4",

}

TY - JOUR

T1 - Low-temperature magnetothermodynamics of Pr0.7Ca0.3MnO3

AU - Roy, M.

AU - Mitchell, J. F.

AU - Ramirez, A. P.

AU - Schiffer, P.

PY - 2001/4

Y1 - 2001/4

N2 - We present a detailed magnetothermal study of Pr0.7Ca0.3MnO3, a perovskite manganite in which an insulator-metal transition can be driven by magnetic field but also by pressure, visible light, X-rays or high currents. We find that the field-induced transition is associated with a large release of energy which accounts for its strong irreversibility. In the ferromagnetic metallic state, specific heat and magnetization measurements indicate a much smaller spin-wave stiffness than seen in any other ferromagnetic manganite, which we explain in terms of ferromagnetism among the Pr moments. The Pr ferromagnetism also appears to influence the low-temperature thermodynamic phase diagram of this material and the uniquely sensitive metastability of the insulating state.

AB - We present a detailed magnetothermal study of Pr0.7Ca0.3MnO3, a perovskite manganite in which an insulator-metal transition can be driven by magnetic field but also by pressure, visible light, X-rays or high currents. We find that the field-induced transition is associated with a large release of energy which accounts for its strong irreversibility. In the ferromagnetic metallic state, specific heat and magnetization measurements indicate a much smaller spin-wave stiffness than seen in any other ferromagnetic manganite, which we explain in terms of ferromagnetism among the Pr moments. The Pr ferromagnetism also appears to influence the low-temperature thermodynamic phase diagram of this material and the uniquely sensitive metastability of the insulating state.

UR - http://www.scopus.com/inward/record.url?scp=18744382725&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18744382725&partnerID=8YFLogxK

U2 - 10.1080/13642810110033818

DO - 10.1080/13642810110033818

M3 - Article

AN - SCOPUS:18744382725

SN - 1364-2812

VL - 81

SP - 417

EP - 431

JO - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties

JF - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties

IS - 4

ER -

Low-temperature magnetothermodynamics of Pr_0.7Ca_0.3MnO₃

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this