the crystals of [ws (cuncs) ] anion have been isolated from ch ,ci solution and examined by x-ray structural analysis as well as by ir spectroscopy. the unit cell is monoclinic with a= 14.3796(13), b= 18.039(1 i), c= 22.5956(23)& p= 96.053(8)', space group p2,/n (14), z= 4. the crystal structure was refined by the least-squares calculations to a final r-value of 0.0398(rw= 0.0443) for 2777...

Lead zirconate titanate (PZT) is one of the most widely studied piezoelectric materials, mainly because of its 'mysterious' relationship between the so-called morphotropic phase boundary (MPB) and its strong piezoelectric coupling factor. Using results from a pair distribution function analysis, this paper examines how the complex local structure in PZT affects the long-range average structure ...

In order to study the crystal structure, phase relationships, and magnetic properties of the system Tb5−xLaxSi2Ge2, a series of polycrystalline samples with compositions ranging from x = 0 to x = 5 have been synthesized and characterized in detail. At room temperature, two structures have been detected: Compounds in the concentration range 0 x < 1 present a monoclinic Gd5Si2Ge2-type structure, ...

the stabilized zirconia with different cu contents synthesized via sol-gel method. the samples were prepared by hydrolysis and condensation of orgnomatelic sol. after that the result gels were dried at 80 °c and then calcined at various temperatures.  ِ the differential thermal analysis (dta), x-ray diffraction (xrd), field emission scanning electronic microscopy (fesem) and transmission electro...

The crystal structures of Rh2B and RhB2 at ambient pressure were explored by using the evolutionary methodology. A monoclinic P2₁/m structure of Rh2B was predicted and donated as Rh2B-I, which is energetically much superior to the previously experimentally proposed Pnma structure. At the pressure of about 39 GPa, the P2₁/m phase of Rh2B transforms to the C2/m phases. For RhB2, a new monoclinic ...