Elements of X-ray Diffraction |
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Page 363
... copper atom is , the atomic fraction of copper . These probabilities are the same for every site and , considering the structure as a whole , we can regard each site as being occupied by a statistically " average " gold - copper atom ...
... copper atom is , the atomic fraction of copper . These probabilities are the same for every site and , considering the structure as a whole , we can regard each site as being occupied by a statistically " average " gold - copper atom ...
Page 365
... copper . No reflections of mixed indices are present . ( b ) Complete order . Each unit cell now contains one gold atom , at 0 0 0 , and three copper atoms , at0 , 0 , and 0 . F = ƒAu + fcu [ ei ( h + k ) + eri ( h + 1 ) + @ * i ( k + l ) ...
... copper . No reflections of mixed indices are present . ( b ) Complete order . Each unit cell now contains one gold atom , at 0 0 0 , and three copper atoms , at0 , 0 , and 0 . F = ƒAu + fcu [ ei ( h + k ) + eri ( h + 1 ) + @ * i ( k + l ) ...
Page 372
... copper atoms on alternate ( 002 ) planes causes c to differ from a , in this case in the direction of a small contraction of c relative to a , because of the difference in size between the gold and copper atoms . But even if c were ...
... copper atoms on alternate ( 002 ) planes causes c to differ from a , in this case in the direction of a small contraction of c relative to a , because of the difference in size between the gold and copper atoms . But even if c were ...
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a₁ absorption coefficient absorption edge alloy analysis angle atomic number austenite axis back-reflection Bragg angle Bragg law Bravais lattice calculated camera circle composition constant copper atoms cos² counter cubic curve Debye ring Debye-Scherrer decrease determined diffracted beam diffraction lines diffraction pattern diffractometer direction distance electrons elements equation error example face-centered face-centered cubic factor film fluorescent fluorescent radiation given grain hexagonal incident beam indices integrated intensity lattice parameter martensite measured metal normal obtained orientation Orthorhombic parallel percent phase photograph pinhole pole figure position powder pattern produced projection pulses rays reciprocal lattice reciprocal-lattice reflecting planes relative residual stress rhombohedral rotation sample scattering shown in Fig sin² slit solid solution spacing specimen spectrometer sphere spot stereographic substance surface temperature tetragonal thickness tion transmission twin unit cell values vector voltage wave wavelength x-ray diffraction x-ray method x-ray tube zero zone