Magentic Ordering under Hydrostatic Pressure in Doped Spin Gap Systems ACu$_{1-x}$Mg$_x$Cl$_3$: A$=$Tl and K

T. Ono; H. Imamura; J. Kawakami; K. Goto; H. Tanaka

doi:10.1016/j.jmmm.2006.10.390

paper

Magentic Ordering under Hydrostatic Pressure in Doped Spin Gap Systems ACu $_{1 - x}$ Mg $_{x}$ Cl $_{3}$ : A $=$ Tl and K

arXiv:cond-mat/0607466 · doi:10.1016/j.jmmm.2006.10.390

Abstract

Magnetic phase transitions under hydrostatic pressures in spin gap systems TlCu $_{0.988}$ Mg $_{0.012}$ Cl $_{3}$ and KCu $_{0.973}$ Mg $_{0.027}$ Cl $_{3}$ were investigated by magnetization measurements. The present doped systems exhibit impurity-induced magnetic orderings. With increasing pressure, ordering temperature $T_{N}$ increases. With a further increase in pressure, the present systems undergo phase transitions to uniform antiferromagnetic phases due to the closing of the triplet gap in the intact dimers. The crossover from the impurity-induced ordered phase to the uniform antiferromagnetic phase occurs at $P ≃ 1.3$ kbar for TlCu $_{0.988}$ Mg $_{0.012}$ Cl $_{3}$ .

2 pages, 3 figures, conference proceeding of International Conference on Magnetism

Magentic Ordering under Hydrostatic Pressure in Doped Spin Gap Systems ACu1−x​Mgx​Cl3​: A=Tl and K

Abstract

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Magentic Ordering under Hydrostatic Pressure in Doped Spin Gap Systems ACu $_{1 - x}$ Mg $_{x}$ Cl $_{3}$ : A $=$ Tl and K