Field-induced magnetic properties in RCrO4 oxides (R=Pr, Gd, Tb, Tm and Yb)

Enrique Jimenez-Melero; J. Isasi; R. Saez-Puche

doi:10.1006/jssc.2001.9476

Field-induced magnetic properties in RCrO4 oxides (R=Pr, Gd, Tb, Tm and Yb)

Enrique Jimenez-Melero
, J. Isasi
, R. Saez-Puche

Universidad Complutense de Madrid

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

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Abstract

RCrO4 oxides (R=Pr, Gd, Tb, Tm, and Yb) have been synthesized at 773K using the corresponding nitrates as precursors. X-ray diffraction data reveal that these samples are single phases and crystallize with the zircon-type structure, showing tetragonal symmetry, space group I41/amd. All the compounds are antiferromagnetic and the Neel temperature, which depends on the R3+ ion, takes values lower than 30 K. The presence of a canting appears to be responsible for the negative values of the magnetic susceptibility found below the compensation temperature. This uncommon phenomenon is named reversal of magnetization. It is field-dependent, being suppressed at 500 Oe for the TmCrO4 compound. The highest value of the compensation temperature (24 K) corresponds to the YbCrO4 oxide. A metamagnetic transition has been observed in all cases at critical fields ranging from 225 Oe (GdCrO4) to 1600 Oe (YbCrO4).

Original language	English
Pages (from-to)	313–319
Journal	Journal of Solid State Chemistry
Volume	164
Issue number	2
DOIs	https://doi.org/10.1006/jssc.2001.9476
Publication status	Published - 2002

Keywords

lanthanide chromates
zircon-type structure
antiferromagnetism
reversal of magnetization
metamagnetism

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title = "Field-induced magnetic properties in RCrO4 oxides (R=Pr, Gd, Tb, Tm and Yb)",

abstract = "RCrO4 oxides (R=Pr, Gd, Tb, Tm, and Yb) have been synthesized at 773K using the corresponding nitrates as precursors. X-ray diffraction data reveal that these samples are single phases and crystallize with the zircon-type structure, showing tetragonal symmetry, space group I41/amd. All the compounds are antiferromagnetic and the Neel temperature, which depends on the R3+ ion, takes values lower than 30 K. The presence of a canting appears to be responsible for the negative values of the magnetic susceptibility found below the compensation temperature. This uncommon phenomenon is named reversal of magnetization. It is field-dependent, being suppressed at 500 Oe for the TmCrO4 compound. The highest value of the compensation temperature (24 K) corresponds to the YbCrO4 oxide. A metamagnetic transition has been observed in all cases at critical fields ranging from 225 Oe (GdCrO4) to 1600 Oe (YbCrO4).",

keywords = "lanthanide chromates , zircon-type structure , antiferromagnetism , reversal of magnetization, metamagnetism",

author = "Enrique Jimenez-Melero and J. Isasi and R. Saez-Puche",

year = "2002",

doi = "10.1006/jssc.2001.9476",

language = "English",

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journal = "Journal of Solid State Chemistry",

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T1 - Field-induced magnetic properties in RCrO4 oxides (R=Pr, Gd, Tb, Tm and Yb)

AU - Jimenez-Melero, Enrique

AU - Isasi, J.

AU - Saez-Puche, R.

PY - 2002

Y1 - 2002

N2 - RCrO4 oxides (R=Pr, Gd, Tb, Tm, and Yb) have been synthesized at 773K using the corresponding nitrates as precursors. X-ray diffraction data reveal that these samples are single phases and crystallize with the zircon-type structure, showing tetragonal symmetry, space group I41/amd. All the compounds are antiferromagnetic and the Neel temperature, which depends on the R3+ ion, takes values lower than 30 K. The presence of a canting appears to be responsible for the negative values of the magnetic susceptibility found below the compensation temperature. This uncommon phenomenon is named reversal of magnetization. It is field-dependent, being suppressed at 500 Oe for the TmCrO4 compound. The highest value of the compensation temperature (24 K) corresponds to the YbCrO4 oxide. A metamagnetic transition has been observed in all cases at critical fields ranging from 225 Oe (GdCrO4) to 1600 Oe (YbCrO4).

AB - RCrO4 oxides (R=Pr, Gd, Tb, Tm, and Yb) have been synthesized at 773K using the corresponding nitrates as precursors. X-ray diffraction data reveal that these samples are single phases and crystallize with the zircon-type structure, showing tetragonal symmetry, space group I41/amd. All the compounds are antiferromagnetic and the Neel temperature, which depends on the R3+ ion, takes values lower than 30 K. The presence of a canting appears to be responsible for the negative values of the magnetic susceptibility found below the compensation temperature. This uncommon phenomenon is named reversal of magnetization. It is field-dependent, being suppressed at 500 Oe for the TmCrO4 compound. The highest value of the compensation temperature (24 K) corresponds to the YbCrO4 oxide. A metamagnetic transition has been observed in all cases at critical fields ranging from 225 Oe (GdCrO4) to 1600 Oe (YbCrO4).

KW - lanthanide chromates

KW - zircon-type structure

KW - antiferromagnetism

KW - reversal of magnetization

KW - metamagnetism

U2 - 10.1006/jssc.2001.9476

DO - 10.1006/jssc.2001.9476

M3 - Article

SN - 0022-4596

VL - 164

SP - 313

EP - 319

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 2

ER -

Field-induced magnetic properties in RCrO4 oxides (R=Pr, Gd, Tb, Tm and Yb)

Abstract

Keywords

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