Search for: [Abstrakt = "The present status of high\-pressure research with the diamond anvil cell \(DAC\) is described, focusing mainly on use of this technique in optical spectroscopy. After a brief description of the history of the development of high\-pressure measurements, the principles of DAC technique are described in more detail. Then different applications of this technique to high\-pressure research are discussed, including optical spectroscopy, electrical measurements, X\-ray diffractometry and other measurements. Results obtained for selected materials, with a view to illustrating the physics behind high\-pressure phenomena, are presented and discussed. These include high\-pressure luminescence studies of Cr3\+ or Yb3\+\-doped lithium niobate crystal \(LiNbO3\) as well as Cr3\+ and Nd3\+\-doped lanthanum lutetium gallium garnet crystal \(La3Lu2Ga3O12\). Finally, the boundary of high\-pressure spectroscopy usefulness is shown. The example of such a case is the study of Cr3\+\-doped MgO\-2.5Al2O3 non\-stoichiometric green spinel."]

Number of results: 1