Daniel M. Pajerowski

     Daniel Pajerowski (pictured at left with a light lunch) is a physicist at the High Flux Isotope Reactor , at the Oak Ridge National Laboratory in Oak Ridge, TN. He is interested in fundamental and applied research. As of May 2017, the fundamental work is towards quantum mechanics (specifically magnetism), and the applied work is on interfaces and others. As a beamline scientist, he gets involved in a hodge-podge of different projects in a supporting role.
Materials families studied may be complex cyanides or complex oxides, or sometimes even more complicated organometallics. One complex cyanide is Prussian blue, which is shown on the atomic scale as the background of this page, and shown utilized for its beautiful color at right ("The Great Wave off Kanagawa" by Hokusai).
     Practically, this research involves lab-work to measure material properties such as: magnetization, optical-spectroscopy, x-ray diffraction, resistivity, electron-microscopy, and others. Samples are often prepared using wet-chemical methods, but high temperature solid-state synthesis is sometimes required. Data analysis often requires usage of software packages and extensive programming, with scripting and prototyping with Python (numpy, scipy, matplotlib, and others) and heavier jobs using C. Frequently, the utilization of larger facilities is also necessary, which include: the National High Magnetic Field Lab, The National Light Source, Oak Ridge National Lab (Neutron Sciences), The Advanced Photon Source, NIST Center for Neutron Research, and The Institut Laue Langevin, where neutron scattering, high magnetic fields, powerful x-rays, and other high-powered techniques are available.

Ph.D. in Physics (2010) U. of Florida, B.Sc. in Physics (2004) U. of Delaware; click for PDF of NSF-style CV; click for web of knowledge

Preferred contact method is via email: firstname at thisdomain.
(*=supervised undergrad, **=supervised highschooler)

37. K. Motoya, M. Hagihala, T. Shigeoka, D. Pajerowski, and M. Matsuda
Long-Time Variation of Magnetic Structure in (PrxLa1-x) Co2Si2: Coexistence of Slow and Fast Processes in Magnetic Phase Transition
J. Phys. Soc. Jpn. 86 (2017) 044707 10.7566/JPSJ.86.044707

36. J.-J. Wen, S. M. Koohpayeh, K. A. Ross, B. A. Trump, T. M. McQueen, K. Kimura, S. Nakatsuji, Y. Qiu, D. M. Pajerowski, J. R. D. Copley, and C. L. Broholm
Disordered Route to the Coulomb Quantum Spin Liquid: Random Transverse Fields on Spin Ice in Pr2Zr2O7
Phys. Rev. Lett. 118 (2017) 107206 doi:10.1103/PhysRevLett.118.107206

EJ 08/06/2016

35. J. Yang, A. Samarakoon, S. Dissanayake, H. Ueda, I. Klich, K. Iida, D. Pajerowski, N. P. Butch, Q. Huang, J. R. D. Copley, S.-H. Lee
Spin jam induced by quantum fluctuations in a frustrated magnet
Proc. Natl. Acad. Sci. U.S.A. 112 (2015) 11519–11523 doi:10.1073/pnas.1503126112

34. D. M. Pajerowski, S. E. Conklin, J. Leao, L. W. Harriger, D. Phelan
High-pressure neutron scattering of the magnetoelastic Ni-Cr Prussian blue analog
Phys. Rev. B 91 (2015) 094104 [10 pages] doi:10.1103/PhysRevB.91.094104

33. V. Tkác, A. Orendácová, R. Tarasenko, D. M. Pajerowski, E. Cižmár, M. Orendác, A. G. Anders, M. W. Meisel, A. Feher
Magnetic Field Induced Slow Magnetic Relaxation in KEr(MoO4)2
Acta. Phys. Pol. A 127 (2014) 353-355 doi:10.12693/APhysPolA.127.35

32. J. S. Helton, D. M. Pajerowski, Y. Qiu, Y. Zhao, D. A. Shulyatev, Y. M. Mukovskii, G. L. Bychkov, S. N. Barilo, J. W. Lynn
Polaron-mediated spin correlations in metallic and insulating La1-xAxMnO3 (A = Ca, Sr, or Ba)
Phys. Rev. B 90 (2014) 214411 [7 pages] doi:10.1103/PhysRevB.90.214411

31. D. M. Pajerowski, Q. Li, J. Hyun,** C. L. Dennis, D. Phelan, P. Yan, P. Chen, G. Li
Chloride-bridged, defect-dicubane {Ln4} core clusters: syntheses, crystal structures and magnetic properties
Dalton Trans. 43 (2014) 11973-11980 doi:10.1039/C4DT01329H

30. D. M. Pajerowski, B. Ravel, C. H. Li, M. F Dumont, D. R. Talham
X-ray Absorption Study of Structural Coupling in Photomagnetic Prussian Blue Analogue Core@Shell Particles
Chem. Mater. 26 (2014) 2586-2594 doi:10.1021/cm4042007

29. D. M. Pajerowski, C. R. Rotundu , J. W. Lynn, R. J. Birgeneau
Magnetic neutron diffraction study of Ba(Fe1-xCox)2As2 critical exponents through the tricritical doping
Phys. Rev. B 87 (2013) 134507 [6 pages] doi:10.1103/PhysRevB.87.134507

28. M. F. Dumont, O. Risset, E. S. Knowles, T. Yamamoto, D. M. Pajerowski, M. W. Meisel, D. R. Talham
Synthesis and Size Control of Iron(II) Hexacyanochromate(III) Nanoparticles and the Effect of Particle Size on Linkage Isomerism
Inorg. Chem. 52 (2013) 4494-4501 doi:10.1021/ic302764k

27. Lili Xu, Qiang Zhang, Guangfeng Hou, Peng Chen, Guangming Li, Daniel M. Pajerowski, Cindi L. Dennis
Syntheses, Structures, and Magnetic Properties of Salen Type Cu-Gd Dimer and Hexamer Complexes with Strong Ferromagnetic Interactions
Polyhedron 52 (2013) 91-95 doi:10.1016/j.poly.2012.11.019

26. D. M. Pajerowski, B. M. Zakrzewski*, B. Ravel
X-ray Structural Studies of Prussian Blue Analogue Heterostructures on Poly(ethylene terephthalate) Supports
Thin Solid Films 526 (2012) 34-40 doi:10.1016/j.tsf.2012.10.046

25. D. J. Arenas, Theo Jegorel, Chris Knab, L. V. Gasparov, V. Martin, Daniel M. Pajerowski, Hideo Kohno, Michael W. Lufaso
Raman spectroscopy evidence of inhomogeneous disorder in the bismuth-oxygen framework of Bi25InO39 and other sillenites
Phys. Rev. B 86 (2012) 144116 [11 pages] doi:10.1103/PhysRevB.86.144116

24. D. M. Pajerowski, V. O. Garlea, E. S. Knowles, M. J. Andrus, M. F. Dumont, Y. M. Calm, S. E. Nagler, X. Tong, D. R. Talham, M. W. Meisel
Magnetic neutron scattering of thermally quenched K-Co-Fe Prussian blue analog photomagnet
Phys. Rev. B 86 (2012) 054431 [8 pages] doi:10.1103/PhysRevB.86.054431

23. D. M. Pajerowski, T. Yamamoto, Y. Einaga
Photomagnetic K0.25Ni1-xCox[Fe(CN)6nH2O and K0.25Co[Fe(CN)6]0.75y[Cr(CN)6]0.75(1-y)·nH2O Prussian Blue Analogue Solid Solutions
Inorg. Chem. 51 (2012) 3648-3655 dx.doi.org/10.1021/ic202571d

22. D. M. Pajerowski, S. Hallock**
Demagnetization in Photomagnetic Films
J. Magn. Magn. Mater. 324 (2012) 1818-1821 dx.doi.org/10.1016/j.jmmm.2012.01.005

21. D. M. Pajerowski, T. Watanabe, T. Yamamoto, Y. Einaga
Electronic conductivity in Berlin green and Prussian blue
Phys. Rev. B 83 (2011) 153202 [4 pages] doi:10.1103/PhysRevB.83.153202

20. D. M. Pajerowski, J. E. Gardner, F. A. Frye, M. J. Andrus, M. F. Dumont, E. S. Knowles, M. W. Meisel, D. R. Talham
Photoinduced Magnetism in a Series of Prussian Blue Analogue Heterostructures
Chem. Mater. 23 (2011) 3045-3053 doi:10.1021/cm2003337

19. M. F. Dumont, E. S. Knowles, A. Guiet, D. M. Pajerowski, A. Gomez, S. W. Kycia, M. W. Meisel, D. R. Talham
Photoinduced Magnetism in Core-Shell Prussian Blue Analogue Heterostructures of KjNik[Cr(CN)6]l·nH2O with RbaCob[Fe(CN)6]c·mH2O
Inorg. Chem. 50 (2011) 4295-4300 doi:10.1021/ic1022054

18. D. M. Pajerowski, J. E. Gardner, D. R. Talham, M. W. Meisel
Anisotropic magnetism in Prussian blue analogue films
New J. Chem. 35 (2011) 1320-1326 doi:10.1039/c0nj00841a

17. D. M. Pajerowski, J. E. Gardner, M. J. Andrus, S. Datta, A. Gomez, S. W. Kycia, S. Hill, D. R. Talham, M. W. Meisel
Magnetic anisotropy in thin films of Prussian blue analogues
Phys. Rev. B 82 (2010) 214405 [5 pages] doi:10.1103/PhysRevB.82.214405 and http://arxiv.org/abs/1006.3801

16. T.-H. Yang, E. S. Knowles, D. M. Pajerowski, J.-S. Xia, L. Yin, S. Gao, M. W. Meisel, L.-M. Zheng
Metal Monophosphonates M{(2-C5H4NO)CH2PO3}(H2O)2 (M = Co, Ni, Mn, Cd): Synthesis, Structure, and Magnetism
Inorg. Chem. 49 (2010) 8474-8480 doi:10.1021/ic101033

15. D. M. Pajerowski, T. C. Stamatatos, S. Mukherjee, E. S. Knowles, M. Bencomo, M. W. Meisel, G. Christou
Pressure dependence of the magnetization in Mn7 single-molecule magnets
Polyhedron 29 (2010) 2462-2464 doi:10.1016/j.poly.2010.05.013

14. D. M. Pajerowski, M. J. Andrus, J. E. Gardner, E. S. Knowles, M. W. Meisel, D. R. Talham
Persistent Photoinduced Magnetism in Heterostructures of Prussian Blue Analogs
J. Am. Chem. Soc. 132 (2010) 4058-4059 doi:10.1021/ja100246n

13. S. Nellutla, M. Pati, Y.-J. Jo, H. D. Zhou, B. H. Moon, D. M. Pajerowski, Y. Yoshida, J. A. Janik, L. Balicas, Y. Lee, M. W. Meisel, Y. Takano, C. R. Wiebe, N. S. Dalal
Magnetic field induced quantum phase transition of the S = 1/2 antiferromagnet K2NaCrO8
Phys. Rev. B 81 (2010) 064431 [6 pages] doi:10.1103/PhysRevB.81.064431 and arXiv:0912.1507

12. D. M. Pajerowski, J. E. Gardner, D. R. Talham, M. W. Meisel
Tuning the sign of photoinduced changes in magnetization: spin transitions in the ternary metal Prussian blue analog NaαNi1-xCox[Fe(CN)6]βnH2O
J. Am. Chem. Soc. 131 (2009) 12927-12936, doi:10.1021/ja9012672

11. A. Orendácová, E. Cižmár, L. Sedláková, J. Hanko, M. Kajnaková, M. Orendác, A. Feher, J. S. Xia, L. Yin, D. M. Pajerowski, M. W. Meisel, V. Zelenák, S. Zvyagin, J. Wosnitza
Interplay of frustration and magnetic field in the two-dimensional quantum antiferromagnet Cu(tn)Cl2
Phys. Rev. B 80 (2009) 144418 (8 pages), doi:10.1103/PhysRevB.80.144418 and arXiv:0906.3181

10. A. T. Savici, G. E. Granroth, C.L. Broholm, D. M. Pajerowski, C. M. Brown, D. R. Talham, M. W. Meisel, K. P. Schmidt, G. S. Uhrig, S. E. Nagler
Neutron scattering evidence for isolated spin-1/2 ladders in (C5D12N)2CuBr4
Phys. Rev. B 80 (2009) 094411 (8 pages), doi:10.1103/PhysRevB.80.094411

9. D. M. Pajerowski M. W. Meisel
Magnetometer probe with low temperature rotation and optical fibers
J. Phys.: Conf. Ser. 150 (2009) 012034 (4pp), doi:10:1088/1742-6596/150/1/012034

8. F. A. Frye, D. M. Pajerowski, J.-H. Park, M. W. Meisel, D. R. Talham
Anisotropic Photoinduced Magnetism in Thin Films of the Prussian Blue Analogue AjCok[Fe(CN)6]l·nH2O
Chem. Mater. 20 (2008) 5706-5713, doi:10.1021/cm800576s

7. M. Stjerndahl, M. Andersson, H. E. Hall, D. M. Pajerowski, M. W. Meisel, R. S. Duran
Superparamagnetic Fe3O4/SiO2 nanocomposites: Enabling the tuning of both the iron oxide load and the size of the nanoparticles
Langmuir 24 (2008) 3532-3536, doi:10.1021/la7035604

6. D. M. Pajerowski, F. A. Frye, D. R. Talham, M. W. Meisel
Size dependence of the photoinduced magnetism and long-range ordering in Prussian blue analog nanoparticles of rubidium cobalt hexacyanoferrate
New J. Phys. 9 (2007) 222 (11 pages), doi:10.1088/1367-2630/9/7/222

5. H. Zhou, K.C. Strates, M.A. Munoz, K.J. Little, D.M. Pajerowski, M.W. Meisel, D.R. Talham, A. Lachgar
Inorganic Crystal Engineering through Cation Metathesis: One-, Two-, and Three-Dimensional Cluster-Based Coordination Polymers
Chem. Mater. 19 (2007) 2238-2246, doi:10.1021/cm063005p

4. F.A. Frye, D.M. Pajerowski, S.M. Lane, N.E. Anderson, J.-H. Park, M.W. Meisel, D.R. Talham
Effect of film thickness on the photoinduced decrease in magnetism for thin films of the cobalt iron Prussian blue analogue Rb0.7Co4[Fe(CN)6]3.0
Polyhedron 26 (2007) 2281-2286, doi:10.1016/j.poly.2006.11.043

3. F.A. Frye, D.M. Pajerowski, N.E. Anderson, J. Long, J.-H. Park, M.W. Meisel, D.R. Talham
Photoinduced magnetism in rubidium cobalt hexacyanoferrate Prussian blue analogue nanoparticles
Polyhedron 26 (2007) 2273-2275, doi:10.1016/j.poly.2006.11.011

2. J.-H. Park, F. Frye, N.E. Anderson, D.M. Pajerowski, Y.D. Huh, D.R. Talham, M.W. Meisel
Cooling rate-dependent charge-transfer-induced spin transition in K0.4Co1.3[Fe(CN)6nH2O Prussian blue analog
J. Magn. Magn. Mater. 310 (2007) 1458-1459, doi:10.1016/j.jmmm.2006.10.468

1. S. Palaniyappan, A. DiChiara, I. Ghebregziabher, E.L. Huskins, A. Falkowski, D. Pajerowski, B.C. Walker
Multielectron ultrastrong laser field ionization of Arn+,Krm+, and Xel+ (n=8, m=9, l=12,) at intensities from 1015W/cm2 to 1018 W/cm2
J. Phys. B: At. Mol. Opt. Phys. 39 (2006) S357-S369
(presently, only APS presentations are shown)
APS March Meeting 2017; New Orleans, Louisiana
D. Pajerowski
Bismuth Manganite Defect Structure

APS March Meeting 2016; Baltimore, Maryland
D. Pajerowski
High-pressure neutron scattering of Prussian blue analogue magnets

APS March Meeting 2015; San Antonio, Texas
D. Pajerowski, L. Krayer, B. Ravel, J. Borchers, H. J. Jeen, A. Biswas
Bismuth Manganite Thin Film Characterization

APS March Meeting 2014; Denver, Colorado
D.M. Pajerowski , S. E. Conklin, J. Leao
High-pressure neutron scattering of Prussian blue analogue magnets

APS March Meeting 2013; Baltimore, Maryland
D.M. Pajerowski , C. R. Rotundu , J.W. Lynn , R. J. Birgeneau
Magnetic neutron diffraction study of BaFe2(1-x)Co2xAs2 critical exponents through the tricritical doping

APS March Meeting 2012; Boston, Massachusetts
D.M. Pajerowski , J.L. Arthur , K. Page , J.S. Miller , J.W. Lynn
Total Scattering Study of Vanadium Tetracyanoethylene

APS March Meeting 2011; Dallas, Texas
D.M. Pajerowski, E.S. Knowles, Y.M. Calm, M.W. Meisel, M.J. Andrus, J.E. Gardner, D.R. Talham, V.O. Garlea, S.E. Nagler
Magnetic neutron scattering of a Prussian blue analogue photomagnet

APS March Meeting 2010; Portland, Oregon
D.M. Pajerowski, M.W. Meisel, E.S. Knowles, M.J. Andrus, J.E. Gardner, D.R. Talham, S. Datta, A. Ozarowski, S. Hill
Magnetic Properties of Prussian Blue Analog Films

APS March Meeting 2009; Pittsburgh, Pennsylvania
D.M. Pajerowski, M.W. Meisel, J.E. Gardner, D.R. Talham
Photoinduced Magnetism of Ternary Transition Metal Prussian Blue Analogs

APS March Meeting 2008; New Orleans, Louisiana
D.M. Pajerowski, J.-H. Park, M.W. Meisel, F.A. Frye, D.R. Talham
Angular Dependent Magnetic Susceptibility with Photoexcitation Studies on Prussian Blue Analog Thin Films

APS March Meeting 2007; Denver, Colorado
D.M. Pajerowski, M.W. Meisel, F.A. Frye, D.R. Talham
Magnetism of Rubidium Cobalt Hexacyanoferrate Nanoparticles