atomic percent


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atomic percent

[ə′täm·ik pər′sent]
(chemistry)
The number of atoms of an element in 100 atoms representative of a substance.
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The obtained atomic percent is compared with the expected nominal composition, and a relative error is determined.
Atomic percent La Sr Co Fe O Sample 1 12.3% 6.9% 9.4% 11.9% 59.6% Sample 2 12.1% 6.7% 8.7% 11.7% 60.8% Average 12.2% 6.8% 9.1% 11.8% 60.2% Expected 11.4% 7.6% 4.0% 16.0% 60.0% Error 7.0% 10.5% 126.3% 26.3% 0.3% Formula Average 0.61 0.34 0.45 0.59 3.01 Expected 0.57 0.38 0.20 0.80 3.00
The atomic percent in films composition of the GAZO films deposited at RT, 100[degrees]C, 200[degrees]C, and 250[degrees]C is listed in Table 1.
Table 1: The measured atomic percent of zinc, oxygen, gallium, and aluminum for the GAZO films deposited at RT, 100[degrees]C, 200[degrees]C, and 250[degrees]C.
The water repellent layer is a silicon oxide carbide film with the atomic percent of Si:O:C m a range of 100:40 to 120:80 to 160, and a 2 to 300nm thickness.
At temperature values 1400-1700 [degrees]C, when oxidation process of nickel decarburization takes place, solubility of carbon xC in atomic percent is described by the expression
Orthopyroxene forms in primitive (high-MgO) basalts but as differentiation proceeds, it is replaced by pigeonite once the enstatite component falls below 60 to 70 atomic percent. There is a miscibility gap between augite and the low-Ca pyroxenes making compositions that plot between the two less common (Fig.
The final step in quantitative electron probe microanalysis is the conversion of x-ray intensities ratios, known as the "k-ratios," to composition (in mass fraction or atomic percent) and/or film thickness.