The effect of pressure on the spin density wave transition in the layered cobaltites [Ca2CoO3]0.62[CoO2] and [Ca2Co4/3Cu2/3O4]0.62[CoO2]

The magnetic field and pressure dependence of the magnetic ordering transition in NaxCoO2(0.6≤x≤0.72)

“…, muon spin rotation and relaxation experiments suggest that the transition to an incommensurate spin density wave state is independent of pressure up to 13 kbar [20]. In these materials, the CoO 2 planes are separated by rocksalt (RS) type blocks.…”

“…In other systems more closely related to Na x CoO 2 , however, it has been shown that the response of the magnetically ordered state to the application of pressure reflects the details of the crystal structure and cannot be understood by simply assuming that the application of hydrostatic pressure leads to a uniform compression along the different crystallographic directions. In the three-and four-layer cobaltites [Ca [20]. In these materials, the CoO 2 planes are separated by rock-salt (RS) type blocks.…”