Synthesis, structure and bonding of Gd6MTe2 (M=Co, Ni), Er6RuTe2

Exploratory synthesis of reduced rare-earth-metal halides, chalcogenides, intermetallics

“…These are the relatively large collection that are isotypic with ordered hexagonal Fe 2 P (better, Fe 6 P 3 or Zr 6 CoAl 2 ) structure, which here include Sc 6 TnTe 2 , Tn = Mn-Ni, Ru, Os, Rh, Ir; R 6 TnTe 2 , R = Y, La, Gd, Dy, Tn = Co, Ni mainly, Er 6 RuTe 2 , and some unusual variants: Sc 6 Te 0.80 Bi 1.68 , Lu 6 MoSb 2 , and even Lu 8 Te (Lu 6 TeLu 2 ) [118][119][120][121]. Charge and size distributions are diverse within some of these.…”

Tunable Magnetic Exchange between Rare-Earth Metal 5d and Iron 3d States: A Case Study of the Multiple Magnetic Transitions in Gd6FeBi2 and the Solid Solutions Dy6–xGdxFeBi2 (1 ≤ x ≤ 5) with Curie Temperatures in the Range 120–350 K

“…A good example of such systems is the extended family RE 6 TX 2 (“6-1-2”), − where X is a p-block element, and among more than a hundred isotypic compounds known to date, no net spin contribution from T is commonly observed. , A notable exception is the phase Gd 6 FeBi 2 , which is a known room-temperature magnet . In the literature, the “6-1-2” series is often referred to as belonging to the Zr 6 CoAl 2 structure type, although from a purely crystallographic point of view, a classification with the anti-K 2 UF 6 type is also in order.…”

The magnetic ordering in the Ho6FeTe2 compound

“…It is known that the series of rare earth intermetallic compounds R 6 TA 2 (with R = Gd-Tm; T = Mn, Fe, Co, Ni, Ru and A = Sb, Bi, Te) adopts the hexagonal Zr 6 CoAs 2 -type structure (space group P62m, No 189) [1][2][3][4]. This structural prototype is a ternary ordered variant of the Fe 2 P structure type [5].…”