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R. W. McCallum publications per year

The chart shows the history of publications by R. W. McCallum between 1969 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. R. W. McCallum published across 57 years, from 1969 to 2025, averaging 3.9 papers a year. Output peaked at 16 publications in 2005. 2 of the 225 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1969 to 2025. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2005. 1969: 1 publication 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 1 publication 1976: 6 publications 1977: 7 publications 1978: 4 publications 1979: 2 publications 1980: 0 publications 1981: 0 publications 1982: 2 publications 1983: 0 publications 1984: 1 publication 1985: 0 publications 1986: 1 publication 1987: 11 publications 1988: 3 publications 1989: 6 publications 1990: 4 publications 1991: 0 publications 1992: 3 publications 1993: 12 publications 1994: 7 publications 1995: 7 publications 1996: 7 publications 1997: 4 publications 1998: 6 publications 1999: 7 publications 2000: 8 publications 2001: 5 publications 2002: 3 publications 2003: 7 publications 2004: 4 publications 2005: 16 publications 2006: 10 publications 2007: 7 publications 2008: 7 publications 2009: 11 publications 2010: 6 publications 2011: 3 publications 2012: 7 publications 2013: 4 publications 2014: 7 publications 2015: 4 publications 2016: 2 publications 2017: 0 publications 2018: 2 publications 2019: 4 publications 2020: 2 publications 2021: 2 publications 2022: 0 publications 2023: 0 publications 2024: 1 publication 2025: 1 publication
1969 2025

225 publications in total across all disciplines

View publications per year as a table
R. W. McCallum: publications per year, 1969 to 2025
Year Publications
1969 1
1970 0
1971 0
1972 0
1973 0
1974 0
1975 1
1976 6
1977 7
1978 4
1979 2
1980 0
1981 0
1982 2
1983 0
1984 1
1985 0
1986 1
1987 11
1988 3
1989 6
1990 4
1991 0
1992 3
1993 12
1994 7
1995 7
1996 7
1997 4
1998 6
1999 7
2000 8
2001 5
2002 3
2003 7
2004 4
2005 16
2006 10
2007 7
2008 7
2009 11
2010 6
2011 3
2012 7
2013 4
2014 7
2015 4
2016 2
2017 0
2018 2
2019 4
2020 2
2021 2
2022 0
2023 0
2024 1
2025 1
Total 225
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R. W. McCallum publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where R. W. McCallum sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 57 bars. Horizontal axis: publications, 50–69 to 1,163+. Vertical axis: number of scientists, 0 to 891. Most scientists, 891, have 190–209 publications. The last bar groups every scientist with 1,163 publications or more. 50–69 publications: 28 scientists 70–89 publications: 152 scientists 90–109 publications: 356 scientists 110–129 publications: 487 scientists 130–149 publications: 723 scientists 150–169 publications: 835 scientists 170–189 publications: 850 scientists 190–209 publications: 891 scientists 210–229 publications: 862 scientists 230–249 publications: 766 scientists 250–269 publications: 726 scientists 270–289 publications: 665 scientists 290–309 publications: 593 scientists 310–329 publications: 537 scientists 330–349 publications: 477 scientists 350–369 publications: 440 scientists 370–389 publications: 356 scientists 390–409 publications: 321 scientists 410–429 publications: 256 scientists 430–449 publications: 246 scientists 450–469 publications: 216 scientists 470–489 publications: 212 scientists 490–509 publications: 174 scientists 510–529 publications: 194 scientists 530–549 publications: 162 scientists 550–569 publications: 131 scientists 570–589 publications: 111 scientists 590–609 publications: 103 scientists 610–629 publications: 99 scientists 630–649 publications: 77 scientists 650–669 publications: 92 scientists 670–689 publications: 56 scientists 690–709 publications: 53 scientists 710–729 publications: 53 scientists 730–749 publications: 38 scientists 750–769 publications: 52 scientists 770–789 publications: 43 scientists 790–809 publications: 38 scientists 810–829 publications: 34 scientists 830–849 publications: 25 scientists 850–869 publications: 18 scientists 870–889 publications: 20 scientists 890–909 publications: 24 scientists 910–929 publications: 27 scientists 930–949 publications: 20 scientists 950–969 publications: 17 scientists 970–989 publications: 10 scientists 990–1,009 publications: 16 scientists 1,010–1,029 publications: 13 scientists 1,030–1,049 publications: 12 scientists 1,050–1,069 publications: 9 scientists 1,070–1,089 publications: 8 scientists 1,090–1,109 publications: 7 scientists 1,110–1,129 publications: 9 scientists 1,130–1,149 publications: 2 scientists 1,150–1,162 publications: 5 scientists 1,163+ publications: 100 scientists
50–69 publications 1,163+

The last bar groups every scientist with 1,163 publications or more.

View publications distribution as a table
Number of Materials Science scientists by publication count, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
Publications Scientists
50–69 28
70–89 152
90–109 356
110–129 487
130–149 723
150–169 835
170–189 850
190–209 891
210–229 862
230–249 766
250–269 726
270–289 665
290–309 593
310–329 537
330–349 477
350–369 440
370–389 356
390–409 321
410–429 256
430–449 246
450–469 216
470–489 212
490–509 174
510–529 194
530–549 162
550–569 131
570–589 111
590–609 103
610–629 99
630–649 77
650–669 92
670–689 56
690–709 53
710–729 53
730–749 38
750–769 52
770–789 43
790–809 38
810–829 34
830–849 25
850–869 18
870–889 20
890–909 24
910–929 27
930–949 20
950–969 17
970–989 10
990–1,009 16
1,010–1,029 13
1,030–1,049 12
1,050–1,069 9
1,070–1,089 8
1,090–1,109 7
1,110–1,129 9
1,130–1,149 2
1,150–1,162 5
1,163+ 100
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R. W. McCallum D-index placement in Materials Science in 2026

The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where R. W. McCallum sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 64 bars. Horizontal axis: D-Index, 40–41 to 165+. Vertical axis: number of scientists, 0 to 667. Most scientists, 667, have 52–53 D-Index. The last bar groups every scientist with 165 D-Index or more. 40–41 D-Index: 211 scientists 42–43 D-Index: 450 scientists 44–45 D-Index: 612 scientists 46–47 D-Index: 612 scientists 48–49 D-Index: 598 scientists 50–51 D-Index: 657 scientists 52–53 D-Index: 667 scientists 54–55 D-Index: 621 scientists 56–57 D-Index: 597 scientists 58–59 D-Index: 610 scientists 60–61 D-Index: 587 scientists 62–63 D-Index: 606 scientists 64–65 D-Index: 533 scientists 66–67 D-Index: 490 scientists 68–69 D-Index: 469 scientists 70–71 D-Index: 378 scientists 72–73 D-Index: 421 scientists 74–75 D-Index: 359 scientists 76–77 D-Index: 323 scientists 78–79 D-Index: 299 scientists 80–81 D-Index: 230 scientists 82–83 D-Index: 210 scientists 84–85 D-Index: 195 scientists 86–87 D-Index: 203 scientists 88–89 D-Index: 175 scientists 90–91 D-Index: 175 scientists 92–93 D-Index: 142 scientists 94–95 D-Index: 121 scientists 96–97 D-Index: 117 scientists 98–99 D-Index: 107 scientists 100–101 D-Index: 88 scientists 102–103 D-Index: 85 scientists 104–105 D-Index: 68 scientists 106–107 D-Index: 62 scientists 108–109 D-Index: 57 scientists 110–111 D-Index: 45 scientists 112–113 D-Index: 49 scientists 114–115 D-Index: 50 scientists 116–117 D-Index: 34 scientists 118–119 D-Index: 38 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 28 scientists 126–127 D-Index: 24 scientists 128–129 D-Index: 33 scientists 130–131 D-Index: 28 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 20 scientists 136–137 D-Index: 23 scientists 138–139 D-Index: 17 scientists 140–141 D-Index: 12 scientists 142–143 D-Index: 17 scientists 144–145 D-Index: 21 scientists 146–147 D-Index: 13 scientists 148–149 D-Index: 11 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 13 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 4 scientists 162–163 D-Index: 4 scientists 164 D-Index: 3 scientists 165+ D-Index: 98 scientists
40–41 D-Index 165+

The last bar groups every scientist with 165 D-Index or more.

View D-Index distribution as a table
Number of Materials Science scientists by D-index, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
D-Index Scientists
40–41 211
42–43 450
44–45 612
46–47 612
48–49 598
50–51 657
52–53 667
54–55 621
56–57 597
58–59 610
60–61 587
62–63 606
64–65 533
66–67 490
68–69 469
70–71 378
72–73 421
74–75 359
76–77 323
78–79 299
80–81 230
82–83 210
84–85 195
86–87 203
88–89 175
90–91 175
92–93 142
94–95 121
96–97 117
98–99 107
100–101 88
102–103 85
104–105 68
106–107 62
108–109 57
110–111 45
112–113 49
114–115 50
116–117 34
118–119 38
120–121 37
122–123 29
124–125 28
126–127 24
128–129 33
130–131 28
132–133 21
134–135 20
136–137 23
138–139 17
140–141 12
142–143 17
144–145 21
146–147 13
148–149 11
150–151 14
152–153 13
154–155 9
156–157 10
158–159 7
160–161 4
162–163 4
164 3
165+ 98
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Overview

R. W. McCallum is affiliated with the Ames Laboratory in the United States and contributes research primarily in the fields of Materials Science, Chemistry, and Physics and Astronomy. Their work spans several subfields including Electronic, Optical and Magnetic Materials, Materials Chemistry, Organic Chemistry, Condensed Matter Physics, and Inorganic Chemistry.

Their research topics predominantly cover Magnetic Properties of Alloys, Magnetic and Transport Properties of Perovskites and Related Materials, Rare-earth and Actinide Compounds, Magnetic Properties and Applications, Inorganic Chemistry and Materials, Catalytic Processes in Materials Science, and Magnetic Properties of Thin Films.

Recent publications by McCallum include:

  • Towards additive manufacturing of magnetocaloric working materials, 2021, Materialia
  • Estimating the in-operando stabilities of AlFe2B2-Based compounds for magnetic refrigeration, 2020, Journal of Alloys and Compounds
  • Reinvestigation of the intrinsic magnetic properties of (Fe1-xCox)2B alloys and crystallization behavior of ribbons, 2020, Journal of Magnetism and Magnetic Materials
  • Borderline first-order magnetic phase transition in AlFe2B2, 2021, Journal of Alloys and Compounds
  • Base-free palladium-catalyzed borylation of enol carboxylates and further reactivity toward deboronation and cross-coupling, 2025, Tetrahedron

McCallum frequently collaborates with other researchers. Some of their frequent coauthors include B.T. Lejeune, Radhika Barua, L. H. Lewis, M. J. Kramer, and Emrah Simsek.

Their research has appeared in several key publication venues, most notably:

  • Journal of Alloys and Compounds
  • Journal of Magnetism and Magnetic Materials
  • Materialia
  • Tetrahedron

The breadth of McCallum's work intersects materials science and chemistry, with a strong emphasis on magnetic properties and related functional materials. Their involvement includes experimental investigations into magnetocaloric materials, alloy magnetic phase transitions, and catalytic processes relevant to material synthesis and modification.

Best Publications

  • Cerium: An Unlikely Replacement of Dysprosium in High Performance Nd–Fe–B Permanent Magnets

    Arjun K. Pathak;Mahmud Khan;Karl A. Gschneidner;Karl A. Gschneidner;Ralph W. McCallum

  • Prospects for Non-Rare Earth Permanent Magnets for Traction Motors and Generators

    M. J. Kramer;R. W. McCallum;I. A. Anderson;S. Constantinides

  • Structural transition and anisotropic properties of single-crystalline SrFe2As2

    J.-Q. Yan;Andreas Kreyssig;Shibabrata Nandi;N. Ni

  • Hole filling, charge transfer and superconductivity in Nd1+xBa2−xCu3O7+δ

    M.J. Kramer;S.I. Yoo;R.W. McCallum;W.B. Yelon

  • Architecture and magnetism of alnico

    Lin Zhou;M. K. Miller;Ping Lu;Liqin Ke

  • Phase diagram in the Nd-Ba-Cu-O system

    S.I. Yoo;R.W. McCallum

  • Substitutions for Cu in YBa2(Cu1−xMx)3O7−δ (M = Fe, Co, Al, Cr, Ni, and Zn)

    Youwen Xu;R.L. Sabatini;A.R. Moodenbaugh;Yimei Zhu

  • Metal-bonded Co-ferrite composites for magnetostrictive torque sensor applications

    Y. Chen;J.E. Snyder;C.R. Schwichtenberg;K.W. Dennis

  • High performance isotropic permanent magnet based on Nd-Fe-B

    R. W. McCallum;A. M. Kadin;G. B. Clemente;J. E. Keem

  • Magnetic properties of bulk, and rapidly solidified nanostructured (Nd1-xCex)2Fe14-yCoyB ribbons

    Arjun K. Pathak;M. Khan;K.A. Gschneidner;K.A. Gschneidner;R.W. McCallum

  • Preparation, crystal structure, heat capacity, magnetism, and the magnetocaloric effect of Pr5Ni1.9Si3 and PrNi

    A. O. Pecharsky;Yu. Mozharivskyj;K. W. Dennis;K. A. Gschneidner

  • Effect of atmosphere and rare earth on liquidus relations in RE–Ba–Cu Oxides

    J. E. Ullman;R. W. McCallum;J. D. Verhoeven

  • Influence of solidification microstructure on the magnetic properties of Ni–Mn–Sn Heusler alloys

    D.L. Schlagel;R.W. McCallum;T.A. Lograsso

  • Effect of the elastic modulus of the matrix on magnetostrictive strain in composites

    Y. Chen;J. E. Snyder;C. R. Schwichtenberg;K. W. Dennis

  • Composite Magnetostrictive Materials For Advanced Automotive Magnetomechanical Sensors

    R. W. McCallum;K. W. Dennis;David Jiles;John Evan Snyder

  • Confirmation of quadrupolar transitions in circular magnetic x-ray dichroism at the dysprosium LIII edge.

    J. C. Lang;George Srajer;C. Detlefs;A. I. Goldman

  • Flux growth at ambient pressure of millimeter-sized single crystals of LaFeAsO, LaFeAsO1-xFx, and LaFe1-xCoxAsO

    J.-Q. Yan;S. Nandi;J. L. Zarestky;W. Tian

  • Temperature dependence of the magnetic anisotropy and magnetostriction of Fe100−xGax (x=8.6, 16.6, 28.5)

    A. E. Clark;M. Wun-Fogle;J. B. Restorff;K. W. Dennis

  • Giant magnetic anisotropy and tunnelling of the magnetization in Li2(Li1−xFex)N

    A. Jesche;R. W. McCallum;S. Thimmaiah;J. L. Jacobs

  • Rapid solidification and metallic glass formation – Experimental and theoretical limits

    M.J. Kramer;H. Mecco;K.W. Dennis;E. Vargonova

Frequent Co-Authors

Matthew J. Kramer
Matthew J. Kramer Ames Laboratory
Alan I. Goldman
Alan I. Goldman Iowa State University
Jiaqiang Yan
Jiaqiang Yan Oak Ridge National Laboratory
David Jiles
David Jiles Iowa State University
Thomas A. Lograsso
Thomas A. Lograsso Ames Laboratory
Vitalij K. Pecharsky
Vitalij K. Pecharsky Iowa State University
Karl A. Gschneidner
Karl A. Gschneidner Iowa State University
Ruslan Prozorov
Ruslan Prozorov Iowa State University
Paul C. Canfield
Paul C. Canfield Iowa State University
Michael K Miller
Michael K Miller Oak Ridge National Laboratory

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