Magnetic Properties of Rare Earth Tetraborides

The magnetic properties and the lattice constants of the rare earth tetraborides RB4 have been determined. The compound PrB4 is ferromagnetic. The compounds in which R represents Nd, Sm, Gd, Tb, Dy, and Ho are antiferromagnetic while ErB4 and YbB4 show metamagnetic behavior. The element Ce and to so...

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Veröffentlicht in:	J. Chem. Phys. 57: No. 9, 3910-14(1 Nov 1972) 3910-14(1 Nov 1972), 1972-01, Vol.57 (9), p.3910-3914
Hauptverfasser:	Buschow, K. H. J., Creyghton, J. H. N.
Format:	Artikel
Sprache:	eng
Schlagworte:	CERIUM BORIDES- DYSPROSIUM BORIDES- ERBIUM BORIDES- GADOLINIUM BORIDES- HOLMIUM BORIDES- NEODYMIUM BORIDES- PRASEODYMIUM BORIDES- TERBIUM BORIDES- ULTRALOW TEMPERATURE- VERY LOW TEMPERATURE- YTTERBIUM BORIDES CERIUM BORIDES/crystal lattice constants of CeB$sub 4$, (E) DYSPROSIUM BORIDES/crystal lattice constants of DyB$sub 4$, (E) ERBIUM BORIDES/crystal lattice constants of ErB$sub 4$, (E) ERBIUM BORIDES/magnetic properties of ErB$sub 4$ at 2 to 300$sup 0$K, (E) GADOLINIUM BORIDES/crystal lattice constants of GdB$sub 4$, (E) LANTHANUM BORIDES- THORIUM BORIDES- YTTRIUM BORIDES LANTHANUM BORIDES/magnetic properties of LaB$sub 4$ at 77 to 300$sup 0$K, (E) LATTICE PARAMETERS LOW TEMPERATURE MAGNETIC PROPERTIES MEDIUM TEMPERATURE N74200 -Physics (Solid State)-Physical Properties NEODYMIUM BORIDES/crystal lattice constants of NdB$sub 4$, (E) NEODYMIUM BORIDES/magnetic properties of NdB$sub 4$ at 2 to 300$sup 0$K, (E) PRASEODYMIUM BORIDES/crystal lattice constants of PrB$sub 4$, (E) PRASEODYMIUM BORIDES/magnetic properties of PrB$sub 4$ at 2 to 300$sup 0$K, (E) SAMARIUM BORIDES/crystal lattice constants of SmB$sub 4$, (E) TEMPERATURE DEPENDENCE HIGH TEMPERATURE- SAMARIUM BORIDES- ULTRALOW TEMPERATURE- VERY LOW TEMPERATURE TERBIUM BORIDES/ crystal lattice constants of TbB$sub 4$, (E) YTTERBIUM BORIDES/crystal lattice constants of YbB$sub 4$, (E) YTTERBIUM BORIDES/magnetic properties of YbB$sub 4$ at 2 to 300$sup 0$K, (E) YTTRIUM BORIDES/magnetic properties
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Zusammenfassung:	The magnetic properties and the lattice constants of the rare earth tetraborides RB4 have been determined. The compound PrB4 is ferromagnetic. The compounds in which R represents Nd, Sm, Gd, Tb, Dy, and Ho are antiferromagnetic while ErB4 and YbB4 show metamagnetic behavior. The element Ce and to some extent also the element Yb show an abnormal valency in the tetraborides. The magnetic properties of the RB4 compounds are discussed in terms of the RKKY formalism. It is shown that the ferromagnetic behavior of PrB4 is probably the result of a strong participating of the orbital angular momentum to the indirect exchange coupling between the localized moments.
ISSN:	0021-9606 1089-7690
DOI:	10.1063/1.1678862