International Journals with Impact factor

Research published in Science Citation Index (SCI) journals with impact factor (IF) has now become a prerequisite for a researcher or a professional seeking placement in reputed academia or research organizations.

What is SCI (Science Citation Index)?

SCI (Science Citation Index) and its companion publication JCR (Journal Citation Reports) are databases of the Institute of Scientific Information (ISI), Philadelphia, USA (http://www.isinet.com). SCI and JCR are the most sought-after worldwide information source (both retrieval and dissemination) and are used for the evaluation and comparison of scientific journals.

What is the impact factor (IF)?

The journal impact factor (IF) in a given year is the ratio of the number of times the citable papers published in the journal are cited to the sum of citable papers published by the journal in the preceding two years. Therefore, it is a measure of citation frequency for a particular year. The value of any scientific publication is assessed by its citation index and measured by its journal impact factor (IF).

No	Journal Name	Impact Factor
1	Nature	42.778
2	Science	41.845
3	Nature Materials	38.663
4	Nature Nanotechnology	31.538
5	Nature Physics	19.256
6	Angewandte Chemie-International Edition	11.994
7	Nano Letters	12.344
8	Advanced Materials	27.398
9	Journal of the American Chemical Society	14.612
10	Advances in Catalysis	7.667
11	Advanced Functional Materials	16.836
12	Physical Review Letters	8.385
13	Small	11.459
14	MRS bulletin	5.199
15	Chemical Communications	5.996
16	Chemistry of Materials	9.576
17	International Journal of Plasticity	4.516
18	Journal of Materials Chemistry	4.339
19	Carbon	4.260
20	Electrochemistry Communications	4.186
21	Inorganic Chemistry	4.123
22	The Journal of Physical Chemistry B	4.086
23	Crystal Growth & Design	4.046
24	Langmuir	4.009
25	Journal of Applied Crystallography	3.629
26	Acta materialia	3.624
27	Applied Physics Letters	3.596
28	Journal of the Mechanics and Physics of Solids	3.542
29	Physical Chemistry Chemical Physics	3.343
30	Nanotechnology	3.310
31	Physical Review B	3.172
32	The Journal of Physical Chemistry A	2.918
33	Journal of power sources	2.809
34	Current Nanoscience	2.793
35	Journal of the Electrochemical Society	2.483
36	Scripta materialia	2.481
37	Journal of nanoparticle research	2.338
38	Intermetallics	2.219
39	Mechanics of Materials	2.211
40	Microporous and Mesoporous Materials	2.210
41	Nanoscale Research Letters	2.158
42	Composites Science and Technology	2.171
43	Journal of Applied Physics	2.171
44	Journal of Solid State Chemistry	2.149
45	IEEE Transactions on Nanotechnology	2.110
46	Electrochemical and Solid State Letters	2.109
47	Solid State Ionics	2.012
48	Solar Energy Materials and Solar Cells	2.002
49	Ultramicroscopy	1.996

These are impact factors of some popular journals. The impact factor (IF) is a measure of the frequency with which the average article in a journal has been cited in a particular year. The impact factor is commonly used to evaluate the relative importance of a journal within its field, you can check the impact factor of a journal, from the above example you may get some ideas about the importance of impact factor.