The icosahedral phase is directly transformed into the [lambda]-[Al.sub.13][Fe.sub.4] monoclinic
The occurrence of a monoclinic
packing and interactions between the slight remaining hydrogen-bonding parts was suggested from a reciprocal lattice analysis.
Z 4 Peak-shape profile Crystal system monoclinic
[R.sub.p] (%) Space group Cc (No 9) [R.sub.wp] (%) [D.sub.calc] 7.15 [R.sub.exp] (%) (g/[cm.sup.-3]) Temperature (K) 295 S Molecular formula Siemens D5005 Molecular weight 1.54056 Cu[K.sub.[alfa]] (g/mol) a ([angstrom]) 10-120 b ([angstrom]) 0.02 c ([angstrom]) 45 [beta] ([grados]) 5501 V ([angstrom]3) 290 Z Pseudo-Voigt Crystal system 8.1 Space group 9.6 [D.sub.calc] 7.1 (g/[cm.sup.-3]) Temperature (K) 1.4 Table 2 Atomic coordinates, isotropic temperature factors and geometric parameters ([angstrom],[grados]) for [Ag.sub.2Sn[Te.sub.3] Atom Ox.
The present work focuses on the following crystalline phases at room temperature and below: the rhombohedral FE N phase (R3c, SG 161, Z = 6), the monoclinic
AFE P phase (Pm, SG 6, Z = 8), and the orthorhombic AFE P phase (Pbcm, SG 57, Z = 8).
phase fraction ([X.sub.m]) was calculated according to the method described by Garvie and Nicholson :
The torsional rigidity of the monoclinic
, piezoelectric cylinder is denoted by K and it can be computed as [9,10]
Similarly, pure monoclinic
zirconia was also checked for its catalytic activity with optimal reaction conditions (catalyst: 0.1 g, time: 6 hrs, temperature: 353 K, flow of oxygen: 40 mL/min, p[O.sub.2]: 760 torr, and cyclohexanol: 10 mL).
[beta]-Quinacridone (ER-02), as it was shown by DSC study, acted as a strong nucleating agent and promoted crystallization of iPP in monoclinic
[Li.sub.3][V.sub.2][(P[O.sub.4]).sub.3]/C nanocrystals comodified with graphene nanosheets and carbon nanotubes as a three-dimensional-network cathode material for rechargeable lithium-ion batteries," RSC Advances, vol.
The Raman bands in this spectrum can be attributed either to monoclinic
or to hexagonal [La.sub.2][O.sub.2][CO.sup.3], which are commonly observed La oxycarbonate crystal phases and are generally marked as phase (Ia) and phase (II), respectively.
The remarkable mechanical properties of zirconia, already exploited in several medical and engineering applications, are mainly due to the tetragonal to monoclinic
(tm) phase transformation.