5 Year Impact Factor & Ranking

14.0 10.5 7.0 3.5 12.354 2017 2018 2019 2020 2021 12.354 2017 2018 2019 2020 2021
  • 1 277
    #31
  • 1 146
    #15
  • 1 67
    #13
  • 1 283
    #34
  • 1 148
    #17
  • 1 68
    #14
  • 1 296
    #33
  • 1 153
    #17
  • 1 69
    #12
  • 1 327
    #39
  • 1 157
    #17
  • 1 69
    #12
  • 1 341
    #36
  • 1 158
    #13
  • 1 69
    #10

About 5 Year Impact Factor & Ranking

Impact Factor based on 5 years of history. Copyright Clarivate Analytics.

Metrics

Year I.F. Materials science, multidisciplinary Physics, applied Physics, condensed matter
2021 12.354 36/341 13/158 10/69
2020 10.362 39/327 17/157 12/69
2019 8.418 33/296 17/153 12/69
2018 7.421 34/283 17/148 14/68
2017 7.105 31/277 15/146 13/67

Definition

Impact Factor

A base of five years may be more appropriate for journals in certain fields because the body of citations may not be large enough to make reasonable comparisons, or it may take longer than two years to publish and distribute leading to a longer period before others cite the work.

Actual value is intentionally only displayed for the most recent year. Earlier values are available in the Journal Citation Reports from Clarivate Analytics.

ISI ranking

Journals are often ranked by Impact Factor in an appropriate Clarivate Analytics subject category. As there are now two Impact Factors published – two-year and five-year Impact Factors – this rank may differ, so care is needed when assessing these ranked lists to understand which of the two metrics is being used. In addition, journals can be categorized in multiple subject categories, giving them different ranks for each subject. Consequently, a rank should always be in context to the subject category.