Magnetic behavior of new ternary metal borides with YCrB4-type structure

Sobczak, R.; Rogl, P.

doi:10.1016/0022-4596(79)90176-2

Cited by 39 publications

(10 citation statements)

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“…These results complement the previous measurements reported for UFeB 4 (Sobczak & Rogl, 1979) and are in agreement with the behavior observed for other UTB 4 compounds (T = Cr, Mn, and Co) between 80 and 300 K (Villars & Calvert, 1991). As shown by the PXRD data and SEM observations, the sample used for the magnetic properties investigation presented a minor fraction of UB 4 .…”

Section: Resultssupporting

confidence: 92%

“…The UFeB 4 compound tends to crystallize with the orthorhombic YCrB 4 -type structure, with uranium and iron replacing yttrium and chromium, respectively, and presents a paramagnetic Curie–Weiss behavior in the 80–300 K temperature range (Sobczak & Rogl, 1979). The phase melts incongruently and, as a result, the as-cast microstructure of alloys in the vicinity of the stoichiometric composition (66B:17Fe:17U at.%) is multiphasic (Dias et al, 2010, 2013 a , 2013 b ).…”

Section: Introductionmentioning

confidence: 99%

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HOLZ Rings in EBSD Patterns of the UFeB₄ Compound: Association with a Random Distribution of Planar Defects

Dias

Carvalho

Santos³

et al. 2013

Microsc Microanal

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The UFeB₄ phase present in different alloys of the B-Fe-U system was studied by powder X-ray diffraction (PXRD) and scanning electron microscopy complemented with energy-dispersive spectroscopy and electron backscattered diffraction (EBSD). The PXRD data showed that the ternary compound crystallized adopting essentially the YCrB₄-type structure. However, microstructural observations revealed that under high undercooling conditions the UFeB₄ phase exhibits a random distribution of defects parallel to, which are consistently associated with intense higher-order Laue zone rings in EBSD patterns. Indexation of the EBSD patterns showed that the defective structure is compatible with an intergrowth of YCrB₄- and ThMoB₄-type layers according to the (010)(YCrB₄)//(110)(ThMoB₄) and [001]YCrB₄//[001](ThMoB₄) orientation relation previously reported for an analogous compound. Magnetic studies indicated that the annealed UFeB₄ compound has a paramagnetic behavior in the 2-300 K temperature range.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

HOLZ Rings in EBSD Patterns of the UFeB₄ Compound: Association with a Random Distribution of Planar Defects

Dias

Carvalho

Santos³

et al. 2013

Microsc Microanal

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“…Powder X-ray diffraction results confirm the existence of UFeB 4 (phase I) crystallizing in the orthorhombic YCrB 4 -type structure [7] with lattice parameters: a ¼ 5.887(1) Å , b ¼ 11.412(2) Å and c ¼ 3.4355(4) Å (R 2q ¼ 0.011), in close agreement with those previously reported (a ¼ 5.877(3) Å , b ¼ 11.389(6) Å and c ¼ 3.438(2) [30]). However, for the U:Fe:4B nominal composition, a small quantity of UB 4 remains after annealing for 120 days (Fig.…”

Section: Resultssupporting

confidence: 84%

“…UFeB 4 crystallizes in the orthorhombic YCrB 4 -type structure (space group Pbam), with uranium and iron replacing yttrium and chromium, respectively. No magnetic order was detected down to 80 K [30] and a paramagnetic CurieeWeiss behaviour was observed.…”

Section: Ternary Phasesmentioning

confidence: 87%

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Isothermal section at 950°C of the U–Fe–B ternary system

Dias

Carvalho²,

Sologub

et al. 2007

Intermetallics

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A systematic investigation of the isothermal section at 950 C of the UeFeeB ternary system was done by means of X-ray powder diffraction, scanning electron microscopy, complemented by energy dispersive X-ray spectroscopy, and electron-probe microanalysis. At this temperature the phase diagram is characterized by the formation of four ternary compounds with negligible homogeneity regions. The compounds are: UFeB 4 (orthorhombic YCrB 4 -type structure, a ¼ 5.887(1) Å , b ¼ 11.412(2) Å and c ¼ 3.4355(4) Å ), UFe 3 B 2 (hexagonal CeCo 3 B 2 -type structure, a ¼ 5.049(1) Å and c ¼ 2.9996(7) Å ), wUFe 4 B (structure closely related with the CeCo 4 B-type, and a small hexagonal cell a ¼ 4.932(1) Å and c ¼ 7.037(2) Å ), and U 2 Fe 21 B 6 (Cr 23 C 6 -type structure, a ¼ 10.766(4) Å ).

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Borides with Two‐Dimensional Boron Networks

Rogl¹

1991

Inorganic Reactions and Methods

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Magnetic behavior of new ternary metal borides with YCrB4-type structure

Cited by 39 publications

References 3 publications

HOLZ Rings in EBSD Patterns of the UFeB₄ Compound: Association with a Random Distribution of Planar Defects

HOLZ Rings in EBSD Patterns of the UFeB₄ Compound: Association with a Random Distribution of Planar Defects

Isothermal section at 950°C of the U–Fe–B ternary system

Borides with Two‐Dimensional Boron Networks

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Magnetic behavior of new ternary metal borides with YCrB4-type structure

Cited by 39 publications

References 3 publications

HOLZ Rings in EBSD Patterns of the UFeB4 Compound: Association with a Random Distribution of Planar Defects

HOLZ Rings in EBSD Patterns of the UFeB4 Compound: Association with a Random Distribution of Planar Defects

Isothermal section at 950°C of the U–Fe–B ternary system

Borides with Two‐Dimensional Boron Networks

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Resources

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HOLZ Rings in EBSD Patterns of the UFeB₄ Compound: Association with a Random Distribution of Planar Defects

HOLZ Rings in EBSD Patterns of the UFeB₄ Compound: Association with a Random Distribution of Planar Defects