Magnetic terbium

The best fit obtained is dominated by a large and positive A°(r2) parameter that varies linearly from 413 cm-1 for Tb(III) to 319 cm-1 to Yb(III) [14]. This fit leads to a ground magnetic doublet for terbium that corresponds to that with the maximum Mj value (= 6), being separated from the first excited level (Mj = 5) by more than 400 cm-1 (Figure 2.2). This feature allows one to explain the SMM behaviour observed in [TBA] [LnPc2]. 

In this chapter, we have reviewed the family of LnPc2 compounds with an emphasis on its terbium analogue, which covers their synthetic approaches, bulk magnetism, magnetism on different substrates and the fabrication towards different molecular schemes of spintronic devices. 

The magnetic storage media being employed are ternary amorphous alloys lTable 6) composed of the rare-earth elements gadolinium. Gd. and terbium. Tb. with Fe and Co lor use in the near infrared. These materials are compatible with GaAs-bascd lasers. These alloy s arc fcnimagiictic. 

Several lanthanide metals can be found in certain types of magnetic data storage disks for computers. Gadolinium, terbium, and dysprosium are among the elements often sandwiched with iron and cobalt in thin layers to make these devices. 

These results indicate that the antiferromagnetic transition in TbB44Si2 is actually of dimer-like nature, where non-magnetic substitution leads to broken pairs resulting in free spins (Mori, 2004). The antiferromagnetically coupled pairs do not feel the effects of dilution of other terbium sites, and therefore, are stable below Hq which is a unique value regardless of the doping content. 

The possibility to couple the excellent self-organization ability of the Pcs with a magnetic property has also been sought through the preparation of a single-molecule magnet (SMM) alkoxy-substituted bis(phthalocyaninato)terbium(III) 30 (Fig. 26a). 

Magnetic Characteristics of Gadolinium, Terbium, and Ytterbium Hydrides in Relation to the Electronic Nature of the Lanthanide Hydrides... 

Table II. Results of Magnetic Studies of Terbium and Gadolinium Hydrides...

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