Desorption characteristics of rare earth (R) hydrides (R=Y, Ce, Pr, Nd, Sm, Gd and Tb) in relation to the HDDR behaviour of R–Fe-based-compounds

Yartys, V.A.; Gutfleisch, Oliver; Panasyuk, V. V.; Harris, I.R.

doi:10.1016/s0925-8388(96)03097-6

Cited by 97 publications

(45 citation statements)

References 5 publications

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“…In [27] it has been reported that the decomposition of YH 3 into YH 2 in vacuum (10 −6 bar) starts at 170 • C and the maximum hydrogen desorption peak occurs at 260 • C. From Fig. 4 individual reactions cannot be resolved clearly and it is assumed that the first peak at 188 • C represents an overlap of the decomposition reactions of YH 3 as well as of Mg 2 NiH 4 .…”

Section: Dsc Resultsmentioning

confidence: 96%

Hydrogen desorption kinetics of melt-spun and hydrogenated Mg90Ni10 and Mg80Ni10Y10 using in situ synchrotron, X-ray diffraction and thermogravimetry

Kalinichenka¹,

Röntzsch

Baehtz

et al. 2010

Journal of Alloys and Compounds

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Section: Dsc Resultsmentioning

confidence: 96%

Hydrogen desorption kinetics of melt-spun and hydrogenated Mg90Ni10 and Mg80Ni10Y10 using in situ synchrotron, X-ray diffraction and thermogravimetry

Kalinichenka¹,

Röntzsch

Baehtz

et al. 2010

Journal of Alloys and Compounds

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“…The thermal decomposition of CeH 3 has been reported as two-step process [16]. In the temperature range 423-673 K, the transformation form CeH 3 to CeH 2 takes place.…”

Section: Discussionmentioning

confidence: 99%

Hydrogen absorption–desorption in CeNi2

Chio

Livraghi

Baricco

2006

Journal of Alloys and Compounds

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“…II. For Nd 6 Fe 12.8 Ga 1.2 , Yartys et al 28 find 20 hydrogen atoms/f.u. This significantly higher value indicates that the hydrogenation reaction at room temperature may be incomplete.…”

Section: Hydridesmentioning

confidence: 99%

Magnetic properties ofR6Fe13−xM1+x
Groot
¹
,
Buschow
²
,
Boer
³

1998
Phys. Rev. B
51
5
20
0
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The magnetic properties of various R 6 Fe 13Ϫx M 1ϩx compounds (RϭLa, Nd, Gd, and Dy͒ crystallizing in the La 6 Co 11 Ga 3 structure have been investigated by magnetic measurements and x-ray diffraction. It is shown that all Nd 6 Fe 13 M compounds with M ϭAu, Ag, Cu, Si, and Ga order antiferromagnetically around 415 K and evidence is provided that the frequently reported, increase of the magnetization at lower temperature is due to impurities. High-field measurements made at 4.2 K on Nd 6Ϫx Dy x Fe 12.7 Ga 1.3 compounds with xϭ0.0, 0.2, 0.5, and 1.0 show that the R-Fe coupling is not yet broken at 35 T. A large hysteresis in the field dependence of the magnetization is present in all compounds including La 6 Fe 11 Al 3 , indicating the role of the Fe-sublattice anisotropy. A theoretical model for the field dependence of the magnetization is constructed, based on local minimization of the free energy. By taking into account the second-and fourth-order magnetocrystalline anisotropy terms, the magnetization behavior of the compounds, including the large hysteresis, can be explained excellently. A structure of ferromagnetically ordered Fe sheets coupling antiferromagnetically to each other is proposed to explain the experimental data. The hydrides of these compounds are all ferromagnetic ͑light R) or ferrimagnetic ͑heavy R) and have an easy magnetization direction along the c axis due to the Fe-sublattice anisotropy. Their ordering temperatures are near 450 K, just slightly above the Néel temperature of the parent compounds, which can be understood from the proposed spin structure.

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Desorption characteristics of rare earth (R) hydrides (R=Y, Ce, Pr, Nd, Sm, Gd and Tb) in relation to the HDDR behaviour of R–Fe-based-compounds

Cited by 97 publications

References 5 publications

Hydrogen desorption kinetics of melt-spun and hydrogenated Mg90Ni10 and Mg80Ni10Y10 using in situ synchrotron, X-ray diffraction and thermogravimetry

Hydrogen desorption kinetics of melt-spun and hydrogenated Mg90Ni10 and Mg80Ni10Y10 using in situ synchrotron, X-ray diffraction and thermogravimetry

Hydrogen absorption–desorption in CeNi2

Magnetic properties ofR6Fe13−xM1+x
Groot
¹
,
Buschow
²
,
Boer
³

1998
Phys. Rev. B
51
5
20
0
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Desorption characteristics of rare earth (R) hydrides (R=Y, Ce, Pr, Nd, Sm, Gd and Tb) in relation to the HDDR behaviour of R–Fe-based-compounds

Cited by 97 publications

References 5 publications

Hydrogen desorption kinetics of melt-spun and hydrogenated Mg90Ni10 and Mg80Ni10Y10 using in situ synchrotron, X-ray diffraction and thermogravimetry

Hydrogen desorption kinetics of melt-spun and hydrogenated Mg90Ni10 and Mg80Ni10Y10 using in situ synchrotron, X-ray diffraction and thermogravimetry

Hydrogen absorption–desorption in CeNi2

Magnetic properties ofR6Fe13−xM1+xGroot1, Buschow2, Boer3 1998Phys. Rev. B515200View full textAdd to dashboardCite

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Magnetic properties ofR6Fe13−xM1+x
Groot
¹
,
Buschow
²
,
Boer
³

1998
Phys. Rev. B
51
5
20
0
View full text Add to dashboard Cite