Temperature evolution of Pr-ion magnetic response in PrB6

Lazukov, V. N.; Nefeodova, E. V.; Tiden, N.N.; Siemensmeyer, K.; Buchsteiner, A.; Alekseev, P. A.; Shitsevalova, N. Yu.

doi:10.1016/j.jallcom.2006.06.112

Cited by 3 publications

(1 citation statement)

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“…They are extensively applied as an electron source in high-performance electron microscopy, various spectroscopic tools, electron lithography, diverse plasma simulators and so on. NdB 6 [6], PrB 6 [7] and GdB 6 [8,9] have been extensively studied owing to their complicated magnetic transport properties. However, their thermionic emission properties have rarely been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

In situ(La_xGd_1−x)B₆cathode materials prepared by the spark plasma sintering technique

Bao¹,

Zhang²,

Zhang³

et al. 2012

Phys. Scr.

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Polycrystalline hexaborides (LaxGd1−x)B6 (x=0, 0.6, 0.8, 1) were synthesized by the reactive spark plasma sintering (SPS) method using a mixed powder of LaH2, GdH2 and B. The effects of La doping contents on the crystal structure, grain orientation, electrical resistivity and thermionic emission properties were investigated by x-ray diffraction, electron backscattered diffraction and emission current measurements, respectively. The results indicate that the high-purity (LaxGd1−x)B6 cathode sintered by SPS exhibits high densification (>97%) and a high value of the Vickers hardness (2375 kg mm−2). When the La doping contents are increased, the thermionic emission current density increases from 11.00 to 36.20 A cm−2. Thus, the SPS technique is a suitable method for synthesizing dense rare-earth hexaborides with excellent properties.

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