Disorder in Rare Earth Metal Halide Carbide Nitrides
نویسنده
چکیده
Structural frustration in a rod packing exhibits analogy to frustration effects in antiferromagnetic systems. Like the spins in a triangular Ising net, rods with periodic contour may arrange randomly. Such frustration effects are observed in rare earth metal carbide nitride halides composed of C2 centered RE6 octahedra and N centered RE4 tetrahedra. These can be connected in varying sequences to form infinite rods or fragments of rods. Two types of rods are essential which are depicted in
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