Volume dependence of the magnetic coupling in la Fe13-x Six based compounds

L. Jia; J. R. Sun; F. W. Wang; T. Y. Zhao; H. W. Zhang; B. G. Shen; D. X. Li; S. Nimori; Y. Ren; Q. S. Zeng

doi:10.1063/1.2894194

Volume dependence of the magnetic coupling in la Fe13-x Six based compounds

L. Jia, J. R. Sun, F. W. Wang, T. Y. Zhao, H. W. Zhang, B. G. Shen, D. X. Li, S. Nimori, Y. Ren, Q. S. Zeng

IMR - Materials Processing and Characterization Division

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31 Citations (Scopus)

Abstract

The effects of pressure and hydrogenation, the former causes a lattice contraction while the latter causes an expansion of the sample, have been systematically studied for La Fe13-x Six (x=1.3-2.1). It is found that the typical change of the Curie temperature is ∼150 K when ∼1.6 Hf.u. is absorbed and ∼-106 K as the pressure sweeps from 0 to 1 GPa. One of the most remarkable results of the present work is the presence of a universal relation between Curie temperature and phase volume. The former linearly grows with the increase of lattice constant (∼1510 KÅ), irrespective of how the phase volume is modified. This result implies the exclusive dependence of the magnetic coupling in La Fe13-x Six on the Fe-Fe distances and the interstitial hydrogen does not affect the electronic structure of the compounds.

Original language	English
Article number	101904
Journal	Applied Physics Letters
Volume	92
Issue number	10
DOIs	https://doi.org/10.1063/1.2894194
Publication status	Published - 2008

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title = "Volume dependence of the magnetic coupling in la Fe13-x Six based compounds",

abstract = "The effects of pressure and hydrogenation, the former causes a lattice contraction while the latter causes an expansion of the sample, have been systematically studied for La Fe13-x Six (x=1.3-2.1). It is found that the typical change of the Curie temperature is ∼150 K when ∼1.6 Hf.u. is absorbed and ∼-106 K as the pressure sweeps from 0 to 1 GPa. One of the most remarkable results of the present work is the presence of a universal relation between Curie temperature and phase volume. The former linearly grows with the increase of lattice constant (∼1510 K{\AA}), irrespective of how the phase volume is modified. This result implies the exclusive dependence of the magnetic coupling in La Fe13-x Six on the Fe-Fe distances and the interstitial hydrogen does not affect the electronic structure of the compounds.",

author = "L. Jia and Sun, {J. R.} and Wang, {F. W.} and Zhao, {T. Y.} and Zhang, {H. W.} and Shen, {B. G.} and Li, {D. X.} and S. Nimori and Y. Ren and Zeng, {Q. S.}",

note = "Funding Information: This work has been supported by the National Natural Science Foundation of China and the National Basic Research of China. The use of the Advanced Photon Source was supported by the U.S. Department of Energy, Office of Science, and Office of Basic Energy Science, under Contract No. DE-AC02-06CH11357.",

year = "2008",

doi = "10.1063/1.2894194",

language = "English",

volume = "92",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "10",

}

TY - JOUR

T1 - Volume dependence of the magnetic coupling in la Fe13-x Six based compounds

AU - Jia, L.

AU - Sun, J. R.

AU - Wang, F. W.

AU - Zhao, T. Y.

AU - Zhang, H. W.

AU - Shen, B. G.

AU - Li, D. X.

AU - Nimori, S.

AU - Ren, Y.

AU - Zeng, Q. S.

N1 - Funding Information: This work has been supported by the National Natural Science Foundation of China and the National Basic Research of China. The use of the Advanced Photon Source was supported by the U.S. Department of Energy, Office of Science, and Office of Basic Energy Science, under Contract No. DE-AC02-06CH11357.

PY - 2008

Y1 - 2008

N2 - The effects of pressure and hydrogenation, the former causes a lattice contraction while the latter causes an expansion of the sample, have been systematically studied for La Fe13-x Six (x=1.3-2.1). It is found that the typical change of the Curie temperature is ∼150 K when ∼1.6 Hf.u. is absorbed and ∼-106 K as the pressure sweeps from 0 to 1 GPa. One of the most remarkable results of the present work is the presence of a universal relation between Curie temperature and phase volume. The former linearly grows with the increase of lattice constant (∼1510 KÅ), irrespective of how the phase volume is modified. This result implies the exclusive dependence of the magnetic coupling in La Fe13-x Six on the Fe-Fe distances and the interstitial hydrogen does not affect the electronic structure of the compounds.

AB - The effects of pressure and hydrogenation, the former causes a lattice contraction while the latter causes an expansion of the sample, have been systematically studied for La Fe13-x Six (x=1.3-2.1). It is found that the typical change of the Curie temperature is ∼150 K when ∼1.6 Hf.u. is absorbed and ∼-106 K as the pressure sweeps from 0 to 1 GPa. One of the most remarkable results of the present work is the presence of a universal relation between Curie temperature and phase volume. The former linearly grows with the increase of lattice constant (∼1510 KÅ), irrespective of how the phase volume is modified. This result implies the exclusive dependence of the magnetic coupling in La Fe13-x Six on the Fe-Fe distances and the interstitial hydrogen does not affect the electronic structure of the compounds.

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DO - 10.1063/1.2894194

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VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 10

M1 - 101904

ER -

Volume dependence of the magnetic coupling in la Fe13-x Six based compounds

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