Magnetostrictive properties of Tb0.2Gd0.8 single crystal in high magnetic fieldsстатья
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Дата последнего поиска статьи во внешних источниках: 23 декабря 2020 г.
Аннотация:Temperature and field dependencies of the magnetostriction of the Tb0.2Gd0.8 single crystal were measured instrong magnetic fields up to 14 T in a temperature range of 4.2–300 K. The temperature dependencies of fivemagnetostriction constants λ1α,0, λ2α,0, λ1α,2, λ2α,2 and λγ,2 were determined, using Clark's theory for rare-earthhexagonal close-packed single crystals. Giant values of linear and volume magnetostriction due to forcedmagnetostriction were found in the Tb0.2Gd0.8 single crystal (λbc = 1.6 × 10−3) in the region of the Curietemperature (near room temperatures). It is shown that giant values of forced magnetostriction are caused by thesharp dependence of exchange interactions on interatomic distances along the hexagonal the c axis.