ChemInform Abstract: PHASE RELATIONS IN THE BERYLLIUM‐RICH SECTION OF THE SYSTEM BERYLLIUM‐COPPER‐IRON

Joensson, S.; Kaltenbach, Kurt; Petzow, G.

doi:10.1002/chin.198248011

Cited by 2 publications

(3 citation statements)

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“…In particular, it has a relatively low density, high anisotropy and a very high Curie temperature, T C of 880 K. [35][36][37] Experimentally, FeBe 2 crystallizes in the hexagonal MgZn 2 structure (spacegroup P 6 3 /mmc, No. 194) and has magnetization, M ≈ 1.95µ B /Fe.…”

Section: Electronic Structure and Magnetism In Febe2mentioning

confidence: 99%

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Stability and electronic structure of the complexK2PtCl6-structure hydridesDM
Halilov
¹
,
Singh
²
,
Gupta
³

et al. 2004
Phys. Rev. B
37
6
18
0
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The stability and bonding of the ternary complex K2PtCl6 structure hydrides is discussed using first principles density functional calculations. The cohesion is dominated by ionic contributions, but ligand field effects are important, and are responsible for the 18-electron rule. Similarities to oxides are discussed in terms of the electronic structure. However, phonon calculations for Sr2RuH6 also show differences, particularly in the polarizability of the RuH6 octahedra. Nevertheless, the yet to be made compounds Pb2RuH6 and Be2FeH6 are possible ferroelectrics. The electronic structure and magnetic properties of the decomposition product, FeBe2 are reported. Implications of the results for H storage are discussed.

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Section: Electronic Structure and Magnetism In Febe2mentioning

confidence: 99%

“…35 The unit cell contains four formula units. The Be atoms are on sites 2a (0,0,0) and 6h (x,2x,1/4), while the Fe atoms are on 4f (1/3,2/3,z).…”

Section: Electronic Structure and Magnetism In Febe2mentioning

confidence: 99%

Stability and electronic structure of the complexK2PtCl6-structure hydridesDM
Halilov
¹
,
Singh
²
,
Gupta
³

et al. 2004
Phys. Rev. B
37
6
18
0
View full text Add to dashboard Cite

show abstract

“…3,4,[20][21][22] Three invariant reactions concerning the liquid phase occur, L + , L + -Be, and L + , as described in detail by Okamoto. 5) In addition, the eutectoid reactions of -Be -Be + , and -Be + " are known at lower temperature.…”

Section: Thermodynamic Analysis Of the Fe-be Binary Systemmentioning

confidence: 99%

Effect of the Order-Disorder Transition of the bcc Structure on the Solubility of Be in the Fe-Be Binary System

2004

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In the Fe-Be binary system, the solubility of Be in the -Fe phase deviates significantly from the so-called Arrhenius equation near temperatures of 600 C. The metastable ordering of the bcc structure in this binary system is expected to play a key role in the phase boundary anomaly. Thus, a thermodynamic analysis of the Fe-Be binary system has been performed considering the ordering behaviour of the bcc phase. The total energies of the ordered structures based on the bcc lattice were obtained using ab initio energetic calculations. The cluster expansion method was applied to the results, and the free energies at finite temperatures were calculated for the bcc solid solution. The formation energy of the phase was also calculated using band-energy calculations. The results were analysed together with some experimental data using the sublattice model, and the equilibrium phase diagram was calculated. The results support the formation of a metastable (bcc + B2) two-phase region accompanied by an ordering of the bcc structure. This metastable ordering of the bcc phase was the dominant factor governing the anomalous change in the solubility of Be in the higher temperature range.

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ChemInform Abstract: PHASE RELATIONS IN THE BERYLLIUM‐RICH SECTION OF THE SYSTEM BERYLLIUM‐COPPER‐IRON

Abstract: Mit thermoanalytischen, röntgenographischen und metallographischen Methoden wurden die Be‐reichen Teile der binären Systeme Be‐Cu und Be‐Fe überprüft und das System Be‐Cu‐Fe im Konzentrationsbereich von 100 bis 80 At.% Be untersucht.

Cited by 2 publications

References 0 publications

Stability and electronic structure of the complexK2PtCl6-structure hydridesDM
Halilov
¹
,
Singh
²
,
Gupta
³

et al. 2004
Phys. Rev. B
37
6
18
0
View full text Add to dashboard Cite

Stability and electronic structure of the complexK2PtCl6-structure hydridesDM
Halilov
¹
,
Singh
²
,
Gupta
³

et al. 2004
Phys. Rev. B
37
6
18
0
View full text Add to dashboard Cite

Effect of the Order-Disorder Transition of the bcc Structure on the Solubility of Be in the Fe-Be Binary System

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ChemInform Abstract: PHASE RELATIONS IN THE BERYLLIUM‐RICH SECTION OF THE SYSTEM BERYLLIUM‐COPPER‐IRON

Abstract: Mit thermoanalytischen, röntgenographischen und metallographischen Methoden wurden die Be‐reichen Teile der binären Systeme Be‐Cu und Be‐Fe überprüft und das System Be‐Cu‐Fe im Konzentrationsbereich von 100 bis 80 At.% Be untersucht.

Cited by 2 publications

References 0 publications

Stability and electronic structure of the complexK2PtCl6-structure hydridesDMHalilov1, Singh2, Gupta3 et al. 2004Phys. Rev. B376180View full textAdd to dashboardCite

Stability and electronic structure of the complexK2PtCl6-structure hydridesDMHalilov1, Singh2, Gupta3 et al. 2004Phys. Rev. B376180View full textAdd to dashboardCite

Effect of the Order-Disorder Transition of the bcc Structure on the Solubility of Be in the Fe-Be Binary System

Contact Info

Product

Resources

About

Stability and electronic structure of the complexK2PtCl6-structure hydridesDM
Halilov
¹
,
Singh
²
,
Gupta
³

et al. 2004
Phys. Rev. B
37
6
18
0
View full text Add to dashboard Cite

Stability and electronic structure of the complexK2PtCl6-structure hydridesDM
Halilov
¹
,
Singh
²
,
Gupta
³

et al. 2004
Phys. Rev. B
37
6
18
0
View full text Add to dashboard Cite