Publikationen

Publikationen 2018

[1] S. Sharma, E. Hildebrandt, M. Major, P. Komissinskiy, I. Radulov, L. Alff. CeCo5 thin films with perpendicular anisotropy grown by molecular beam epitaxy, Journal of Magnetism and Magnetic Materials 452 (2018) 80-85.

[2] S. Sawatzki, T. Schneider, M. Yi, E. Bruder, S. Ener, M. Schonfeldt, K. Guth, B.X. Xu, O. Gutfleisch. Anisotropic local hardening in hot-deformed Nd-Fe-B permanent magnets, Acta Materialia 147 (2018) 176-183.

[3] L.V.B. Diop, M.D. Kuz'min, K.P. Skokov, Y. Skourski, O. Gutfleisch. Origin of field-induced discontinuous phase transitions in Nd2Fe17, Physical Review B 97 (2018).

[4] D. Gölden, H.B. Zhang, I. Radulov, I. Dirba, P. Komissinskiy, E. Hildebrandt, L. Alff. Evolution of anisotropy in bcc Fe distorted by interstitial boron, Physical Review B 97 (2018).

[5] S. Taskaev, K. Skokov, V. Khovaylo, D. Karpenkov, M. Ulyanov, D. Bataev, A. Dyakonov, O. Gutfleisch. Effects of severe plastic deformation on the magnetic properties of terbium, Aip Adv 8 (2018).

[6] A. Zieschang, J. Bocarsly, M. Dürrschnabel, H.-J. Kleebe, R- Seshadri, B. Albert, Low-temperature synthesis and magnetostructural transition in antiferromagnetic, refractory nanoparticles: Chromium Nitride, CrN, Chem. Mater. 30 (5), 1610–1616 (2018).

[7] S. Sabet, A. Moradabadi,S. Gorji, M. Yi, Q. Gong, M. H. Fawey, E. Hildebrandt, D. Wang, H. Zhang, B. -X. Xu, C. Kübel, L. Alff, On the origin of incoherent magnetic exchange coupling in MnBi/FexCo1-x bilayer system, Submitted to PRB.

 

Publikationen 2017

[1] S. Muralidhar, J. Gräfe, Y.-Ch. Chen, M. Etter, G. Gregori, S. Ener, S. Sawatzki, K. Hono, O. Gutfleisch, H. Kronmüller, G. Schütz, and E.J. Goering, Temperature-dependent first-order reversal curve measurements on unusually hard magnetic low-temperature phase of MnBi, Phy. Rev. B 95 (2017) 024413.

[2] D. Gölden, E. Hildebrandt, L. Alff, Thin film phase diagram of iron nitrides grown by molecular beam epitaxy, J. Magn. Magn. Mater. 422 (2017) 407-411.

[3] I. Dirba, C.A. Schwöbel, L.V.B. Diop, M. Duerrschnabel, L. Molina-Luna, K. Hofmann, P. Komissinskiy, H.-J. Kleebe, O. Gutfleisch, Synthesis, morphology, thermal stability and magnetic properties of α″-Fe16N2 nanoparticles obtained by hydrogen reduction of γ-Fe2O3 and subsequent nitrogenation, Acta Materialia 123 (2017) 214-222.

[4] S. Sabet, E. Hildebrandt, F. M. Römer, I. Radulov, H. Zhang, M. Farle, and L. Alff, Low-temperature phase c-axis oriented manganese bismuth thin films with high anisotropy grown from an alloy Mn55Bi45 target; IEEE Trans. Magn. 53 (2017).

[5] C.M. Hamm, L. Diop, H. Zhang, O. Gutfleisch, and C.S. Birkel. Microwave synthesis and magnetic properties of Laves-type Ti2M3Si (M = Mn, Fe, Co, Ni), Physica Status Solidi C: Current Topics in Solid State Physics Vol 14 No 3-4 14 (2017).

[6] F. Bittner, T.G. Woodcock, L. Schultz, Ch. Schwöbel, O. Gutfleisch, G.A. Zickler, J. Fidler, K. Üstüner, M. Katter, Normal and abnormal grain growth in fine-grained Nd-Fe-B sintered magnets prepared from He jet milled powders, J. Magn. Magn. Mater. 426 (2017) 698-707.

[7] K. Loewe, D Benke, Ch. Kübel, T. Lienig, K.P. Skokov, O. Gutfleisch, Grain boundary diffusion of different rare earth elements in Nd-Fe-B sintered magnets by experiment and FEM simulation, Acta. Mater 124 (2017) 421-429.

[8] F. Rhein, R. Karmazin, M. Krispin, T. Reimann, O. Gutfleisch, Enhancement of coercivity and saturation magnetization of Al3+ substituted M-type Sr-hexaferrites, J. Alloys Compd. 690 (2017) 979-985

[9] S. K. Pal, K. P. Skokov, T. Groeb, S. Ener, O. Gutfleisch, Properties of magnetically semi-hard (FexCo1−x)3B compounds, Journal of Alloys and Compounds, J. Alloys and Compd. 697 (2017) 427-433

[10] S.K. Pal, L.V.B. Diop, K.P. Skokov, O. Gutfleisch Magnetic properties of Mo-stabilized bulk Fe3B magnet, Scripta Materialia 130 (2017) 234–237

[11] H. Sepehri-Amin, J. Thielsch, J. Fischbacher, T. Ohkubo, T. Schrefl, O. Gutfleisch, K. Hono, Correlation of microchemistry of cell boundary phase and interface structure to coercivity of Sm(Co0.784Fe0.100Cu0.088Zr0.028)7.19 sintered magnets, Acta Mater. 126 (2017) 1-10

[12] T. Helbig, K. Loewe, S. Sawatzki, M. Yi, B.-X. Xu, O. Gutfleisch, Experimental and Computational Analysis of Magnetization Reversal in (Nd,Dy)-Fe-B Core Shell Sintered Magnets, Acta Mater. 127 (2017) 498-504

[13] Ch. M. Hamm, J.D. Bocarsly, G. Seward, U.I. Kramm, and Chr. S. Birkel, Non-conventional synthesis and magnetic properties of MAX phases (Cr/Mn)2AlC and (Cr/Fe)2AlC, J. Mater. Chem. C 5 (2017) 5700

[14] T. Gröb, L. Wießner, E. Bruder, T. Faske, W. Donner, P. Groche, C. Müller, Magnetic hardening of Fe50Co50 by rotary swaging, , J. Magn. Magn. Mater. 428 (2017) 255-259

[15] A. Zieschang, J.D. Bocarsly, M. Dürrschnabel, L. Molina-Luna, H.-J. Kleebe, R. Seshadri, B. Albert Nanoscale Iron Nitride, ε-Fe3N: Preparation from Liquid Ammonia and Magnetic Properties. Mat. 29 (2017) 621-628

[16] R. Salikhov, R. Meshkian, D. Weller, B. Zingsem, D. Spoddig, J. Lu, A.S. Ingason, H. Zhang, J. Rosen, U. Wiedwald, and M. Farle, Magnetic properties of nanolaminated (Mo0.5Mn0.5)2GaC MAX phase, J. Appl. Phys. 121 (2017) 163904

[17] M. Duerrschnabel, M. Yi, K. Uestuener, M. Liesegang, M. Katter, H.-J. Kleebe, B. Xu, O. Gutfleisch, and L. Molina-Luna, Atomic structure and domain wall pinning in samaraium-cobalt-based permanent magnets. Nature Comm. 8:54 (2017) 1-7

[18] M. Yi, H. Zhang, O. Gutfleisch, and B.-X. Xu, Multiscale Examination of Strain Effects in Nd-Fe-B Permanent Magnets, Physical Rev. App. 8 (2017) 014011

[19] D. Sander, S. O. Valenzuela, D. Makarov, C. H. Marrows, E. E. Fullerton, P. Fischer, J. McCord, P. Vavassori, S. Mangin, P. Pirro, B. Hillebrands, A. D. Kent, T. Jungwirth, O. Gutfleisch, C. G. Kim and A. Berger, The 2017 Magnetism Roadmap, J. Phys. D: Appl. Phys. 50 (2017) 363001

[20] S. Sabet, E. Hildebrandt, and L. Alff, Synthesis and magnetic properties of the thin film exchange spring system of MnBi/FeCo, J. Phys.: Conf. Ser. 903 (2017) 012032

[21] B. Fayyazi, K.P. Skokov, T. Faske, D.Y. Karpenkov, W. Donner, and O. Gutfleisch, Bulk combinatorial analysis for searching new rare-earth free permanent magnets: Reactive crucible melting applied to the Fe-Sn binary system, Acta Mater. 141 (2017) 434-443

 

Publikationen 2016

[1] S. Sawatzki, Chr. Kübel, S. Ener, and O. Gutfleisch, Grain boundary diffusion in nanocrystalline Nd-Fe-B permanent magnets with low-melting eutectics, Acta. Mater. 115 (2016) 354-363

[2] Y-Ch. Chen, S. Sawatzki, S. Ener, H. Sepehri-Amin, A. Leineweber, G. Gregori, F. Qu, S. Muralidhar, T. Ohkubo, K. Hono, O. Gutfleisch, H. Kronmüller, G. Schütz, and E.J. Goering, On the synthesis and microstructure analysis of high performance MnBi, AIP Advances 6 (2016) 125201

[3] H. Zhang, I. Dirba, T. Helbig, L. Alff, and O. Gutfleisch, Engineering perpendicular magnetic anisotropy in Fe via interstitial nitrogenation: N choose K, APL Mater. 4 (2016) 116104

[4] Christin M. Hamm, Dominik Gölden, Erwin Hildebrandt, Jürgen Weischenberg, Hongbin Zhang, Lambert Alff and Christina S. Birkel, Magnetic properties of the Laves-type phases Ti2Co3Si and Ti2Fe3Si and their solid solution, J. Mater. Chem. C 4 (2016) 7430-7435

[5] C.M. Hamm, T. Schäfer, H. Zhang, and C.S. Birkel. Non-conventional synthesis of the 413 MAX phase V4AlC3 , ZAAC 642 (2016) 1397-1401

[6] Löwe, Konrad, Grain Boundary Engineering in Sintered Nd-Fe-B Permanent Magnets for Efficient Utilization of Heavy Rare Earth Elements, Technische Universität Darmstadt, Doktorarbeit (2016)

[7] S. Ener, J. Kroder, K.P Skokov, O. Gutfleisch, The search for room temperature tetragonal phases of Fe-Mn-Ga: A reactive crucible melting approach, J. Alloys Compd. 683 (2016) 198-204

[8] L.V.B. Diop, M.D. Kuz'min, K.P. Skokov, D.Yu. Karpenkov, O. Gutfleisch, Magnetic anisotropy ofSm2Fe17single crystals, Phys. Rev. B 94 (2016) 144413

[9] Y. Yang, A. Walton, R. Sheridan, K. Güth, R. Gauß, O. Gutfleisch, M. Buchert, B.M. Steenari, T. Van Gerven, P.T. Jones, K. Binnemans, REE Recovery from End-of-Life NdFeB Permanent Magnet Scrap: A Critical Review, J. Sustain. Metall. (2016) open Access DOI: 10.1007/s40831-016-0090-4

[10] U. Sanyal, S. Ener, E. Anagnostopoulou, M. Pousthomis, P.-F. Fazzini, L.-M. Lacroix, K.P. Skokov, O. Gutfleisch, G. Viau, Co@CoSb Core–Shell Nanorods: From Chemical Coating at the Nanoscale to Macroscopic Consolidation, Chemistry of Materials 28 (2016) 4982-4990

[11] K. Löwe, M. Dürrschnabel, L. Molina-Luna, R. Madugundo, B. Frincu, H.-J. Kleebe, O. Gutfleisch, G.C. Hadjipanayis, Microstructure and magnetic properties of melt-spun Alnico-5 alloys, J. Magn. Magn. Mater. 407 (2016) 230-234

[12] S.V. Taskaev, K.P. Skokov, V.V. Khovaylo, M.V. Gorshenkov, A.N. Vasiliev, O.S. Volkova, D.S. Bataev, A.P. Pellenen, O. Gutfleisch, Magnetic Properties of Nd and Sm Rare-Earth Metals After Severe Plastic Deformation, IEEE Magnetics Letters 7 (2016) 1-4

[13] M. Yi, O. Gutfleisch, B. Xu, Micromagnetic simulations on the grain shape effect in Nd-Fe-B magnets, J. Appl. Phys. 120 (2016) 116104

[14] S. Sawatzki, Ch. Kübel, S. Ener, and O. Gutfleisch, Optimization of the grain boundary diffusion process in hot-deformed Nd-Fe-B permanent magnets with low melting eutectics, REPM Proc. 24th Int. Workshop on RE and Future Permanent Magnets and their Applications (Darmstadt, Germany)(2016) 577-585.

[15] I. Poenaru, A. Lixandru, A. Dirks, J. Gassmann, R. Hord, O. Diehl, S. Sawatzki, A. Buckow, K. Gueth, R. Gauß, O. Gutfleisch, Cerium-substituted Nanocrystalline Melt-Spun Nd-Fe-B alloys for Resource-efficient Permanent Magnets, REPM Proc. 24th Int. Workshop on RE and Future Permanent Magnets and their Applications (Darmstadt, Germany)(2016) 330-333.

 

Publikationen 2015

1) Edström, M. Werwiński, J. Rusz, O. Eriksson, K.P. Skokov, I.A. Radulov, S. Ener, M.D. Kuz'min, J. Hong, M. Fries, D.Y. Karpenkov, O. Gutfleisch, J. Fidler, Magnetic properties of(Fe1−xCox)2B alloys and the effect of doping by 5d elements, Phys. Rev. B 92 (2015) 174413

2) O. Gutfleisch, T. Gottschall, M. Fries, D. Benke, I. Radulov, K.P. Skokov, H. Wende, M. Gruner, M. Acet, P. Entel, and M. Farle, Mastering hysteresis in magnetocaloric materials (Online Philosophical Transactions A DOI: 10.1098/rsta.2015.0308)

3) Shrikant Bhat, Leonore Wiehl, Leopoldo Molina-Luna, Enrico Mugnaioli, Stefan Lauterbach, Sabrina Sicolo, Peter Kroll, Michael Duerrschnabel, Norimasa Nishiyama, Ute Kolb, Karsten Albe, Hans-Joachim Kleebe, and Ralf Riedel ‘High-Pressure Synthesis of Novel Boron Oxynitride B6N4O3 with Sphalerite Type Structure’ Chem. Mater., 2015, 27 (17), pp 5907–5914 DOI: 10.1021/acs.chemmater.5b01706 http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.5b01706

4) Dirba, Imants and Komissinskiy, Philipp and Gutfleisch, Oliver and Alff, Lambert Increased magnetic moment induced by lattice expansion from α-Fe to α′-Fe8N, Journal of Applied Physics, 117, 173911 (2015) http://scitation.aip.org/content/aip/journal/jap/117/17/10.1063/1.4919601

5) H. Sepehri-Amin, T. Ohkubo, K. Hono, K. Güth, and O. Gutfleisch, Mechanism of the texture development in hydrogen-disproportionation-desorption-recombination (HDDR) processed Nd-Fe-B powders, Acta Mat 85 (2015) 42–52 http://www.sciencedirect.com/science/article/pii/S1359645414008325

6) [Online-Edition: http:// doi:10.1016/j.actamat.2014.11.003] In: Acta Materialia, Volume 85, 15 February 2015, Pages 42–52

7) Jian, Hong ; Skokov, Konstantin P. ; Gutfleisch, Oliver : Microstructure and magnetic properties of Mn–Al–C alloy powders prepared by ball milling. [Online-Edition: http://dx.doi.org/10.1016/j.jallcom.2014.10.138] Journal of Alloys and Compounds, 622 pp. 524-528. ISSN 09258388

I. Dirba, M. Baghaie Yazdi, A. Radetinac, P. Komissinskiy, S. Flege, O. Gutfleisch, L. Alff, Growth, structure, and magnetic properties of γ´-Fe4N thin films, JMMM 379 (2015)151–155.http://www.sciencedirect.com/science/article/pii/S0304885314012463 [Online-Edition: http://doi:10.1016/j.jmmm.2014.12.033] In: Journal of Magnetism and Magnetic Materials, Volume 379, 1 April 2015, Pages 151–155

8) Loewe, K. ; Brombacher, C. ; Katter, M. ; Gutfleisch, O. : Temperature-dependent Dy diffusion processes in Nd–Fe–B permanent magnets. [Online-Edition: http://dx.doi.org/10.1016/j.actamat.2014.09.039] In: Acta Materialia, 83 pp. 248-255. ISSN 13596454

9) K. Hofmann, N. Kalyon, C. Kapfenberger, L. Lamontagne, S. Zarrini, R. Berger, R. Seshadri, B. Albert, Metastable Ni7B3: A New Paramagnetic Boride from Solution Chemistry, Its Crystal Structure and Magnetic Properties, Inorg. Chem. 54 (2015) 10873-77

10) M. Kompaniiets, O. V. Dobrovolskiy, C. Neetzel, W. Ensinger, M. Huth, Superconducting Proximity Effect in Crystalline Co and Cu Nanowires, Journal of Superconductivity and Novel Magnetism 28 (2015) 431-436

A. Knappschneider, Ch. Litterscheid, J. Brgoch, N.C. George, S. Henke, A.K. Cheetham, J.G. Hu, R. Seshadri, B. Albert, Manganese Tetraboride, MnB4: High-Temperature Crystal Structure, p–n Transition, 55Mn NMR Spectroscopy, Solid Solutions, and Mechanical Properties, Chem. Eur. J. 21 (2015) 8177-8181

11) P. Groche and L. Wießner, High-Performance Permanent Magnets by Cold Forming, 60 Excellent Inventions in Metal Forming (2015) Springer Vieweg 337-342

12) L. Wießner, T. Gröb, E. Bruder, P. Groche and C. Müller, Severe Plastic Deformation and Incremental Forming for Magnetic Hardening, Applied Mechanics and Materials Vol. 794 (2015) 152 – 159

13) K. Löwe, C. Brombacher, M. Katter, and O. Gutfleisch, Temperature-dependent Dy diffusion processes in Nd-Fe-B permanent magnets, Acta Mater. 83 (2015) 248-255

14) R. Sueptitz, S. Sawatzki, M. Moore, M. Uhlemann, O. Gutfleisch, and A. Gebert, Effect of DyF3 on the corrosion behavior of hot-pressed Nd-Fe-B permanent magnets, Mater. Corros. 66, No. 2 (2015) 152-157

15) M.D. Kuzmin, K.P. Skokov, I. Radulov, C.A. Schwöbel, S. Foro, W. Donner, M. Werwiński, J. Rusz, E. Delczeg-Czirjak, and O. Gutfleisch, Magnetic anisotropy of La2Co7, Journal of Applied Physics,118 (2015), 053905

16) S. Sawatzki, T.G. Woodcock, K. Güth, K.-H. Müller, and O. Gutfleisch, Calculation of remanence and degree of texture from EBSD orientation histograms and XRD rocking curves in Nd-Fe-B sintered magnets, J. Magn. Magn. Mater. 382 (2015) 219-224

17) M. Yi, B.-X. Xu, D. Gross, Mechanically induced deterministic 180o switching in nanomagnets, Mechanics of Materials. 87 (2015) 40-49

18) M. Yi, B.-X. Xu, Z. Shen, Effects of magnetocrystalline anisotropy and magnetization saturation on the mechanically induced switching in nanomagnets. Journal of Applied Physics. 117(10) (2015) 103905

19) M. Yi, B.-X. Xu, Z. Shen, 180o magnetization switching in nanocylinders by a mechanical strain, Extreme Mechanics Letters. 3 (2015) 66-71

20) M. Yi, B.-X. Xu, Phase field simulation on mechanically induced 180 degree switching in nanomagnets, PAMM. 15(1) (2015) 441-442

 

Publikationen 2014

1) S. Sawatzki, S. Ener, Chr. Kübel, and O. Gutfleisch, Effect of DyCu doping of hot-compacted and die-upset Nd-Fe-B magnets, REPM Proc. 23rd Int. Workshop on RE and Future Permanent Magnets and their Applications, Annapolis, USA (2014) 335-338

2) C. M. Hamm, L. Alff and B. Albert. Synthesis of Microcrystalline Ce2O3 and Formation of Solid Solutions between Cerium and Lanthanum Oxides. Z. Anorg. Allg. Chem. 640 (2014) 1050

3) Rades, S. Kraemer, R. Seshadri, and B. Albert, Size and Crystallinity Dependence of Magnetism in Nanoscale Iron Boride, α-FeB, Chem. Mater. 26 (2014) 1549-1552

4) A. Knappschneider, Ch. Litterscheid, N.C. George, J. Brgoch, N. Wagner, J. Beck, J.A. Kurzman, R. Seshadri, and B. Albert, Peierls-Distorted Monoclinic MnB4 with a Mn-Mn Bond, Angew. Chem. Int. Ed. 53 (2014) 1-6

5) Hrkac, G. ; Butler, K. ; Woodcock, T. G. ; Saharan, L. ; Schrefl, T. ; Gutfleisch, O. : Modeling of Nd-Oxide Grain Boundary Phases in Nd-Fe-B Sintered Magnets. [Online-Edition: ttp://dx.doi.org/10.1007/s11837-014-0980-5] In: JOM, 66 (7) pp. 1138-1143. ISSN 1047-4838 (2014)

6) Min Yi, Bai-Xiang Xu A constraint-free phase field model for ferromagnetic domain evolution http://rspa.royalsocietypublishing.org/content/470/2171/20140517 [Online-Edition: http://dx.doi.org/10.1098/rspa.2014.0517 In: The Royal Society Publishing, Journal: Proc. R. Soc. A 470: 20140517

7) Woodcock, T.G. ; Bittner, F. ; Mix, T. ; Müller, K.-H. ; Sawatzki, S. ; Gutfleisch, O. : On the reversible and fully repeatable increase in coercive field of sintered Nd–Fe–B magnets following post sinter annealing. [Online-Edition: http://dx.doi.org/10.1016/j.jmmm.2014.02.025] In: Journal of Magnetism and Magnetic Materials, 360 pp. 157-164. ISSN 03048853], (2014)

8) Bance, S. ; Oezelt, H. ; Schrefl, T. ; Ciuta, G. ; Dempsey, N. M. ; Givord, D. ; Winklhofer, M. ; Hrkac, G. ; Zimanyi, G. ; Gutfleisch, O. ; Woodcock, T. G. ; Shoji, T. ; Yano, M. ; Kato, A. ; Manabe, A. Influence of defect thickness on the angular dependence of coercivity in rare-earth permanent magnets. [Online-Edition: http://dx.doi.org/10.1063/1.4876451] In: Applied Physics Letters, 104 (18) p. 182408. ISSN 0003-6951

9) Sawatzki, Simon ; Dirks, Almut ; Frincu, Bianca ; Löwe, Konrad ; Gutfleisch, Oliver : Coercivity enhancement in hot-pressed Nd-Fe-B permanent magnets with low melting eutectics. [Online-Edition: http://dx.doi.org/10.1063/1.4859097] In: Journal of Applied Physics, 115 (17) 17A705. ISSN 0021-8979