► Forschungsinteressen

12

O. Janka:
"Intermetallic materials" in Comprehensive Inorganic Chemistry III
Elsevier, 2022
[DOI: 10.1016/B978-0-12-823144-9.00092-3]

11

S. Engel, O. Janka:
"Bulk Metallic Glasses" in Applied Inorganic Chemistry
De Gruyter, 2022 Chapter 2.11
[Link to Volume 1]   [Link to Volume 2]   [Link to Volume 3]

10

S. Engel, O. Janka:
"Shape Memory Alloys" in Applied Inorganic Chemistry
De Gruyter, 2022 Chapter 2.10
[Link to Volume 1]   [Link to Volume 2]   [Link to Volume 3]

9

O. Janka, M. Bertau, R. Pöttgen:
"Slags as materials resource" in Applied Inorganic Chemistry
De Gruyter, 2022 Chapter 6.4
[Link to Volume 1]   [Link to Volume 2]   [Link to Volume 3]

8

M. Buchner, O. Janka:
"Be and Be alloys" in Applied Inorganic Chemistry
De Gruyter, 2022 Chapter 2.7
[Link to Volume 1]   [Link to Volume 2]   [Link to Volume 3]

7

O. Janka:
"Metallic light-weight alloys – Al, Ti, Mg" in Applied Inorganic Chemistry
De Gruyter, 2022 Chapter 2.3
[Link to Volume 1]   [Link to Volume 2]   [Link to Volume 3]

6

O. Janka, S. M. Kauzlarich:
"Zintl Compounds" in Encyclopedia of Inorganic and Bioinorganic Chemistry
Wiley, 2021.
[DOI: 10.1002/9781119951438.eibc0244.pub3]

5

O. Janka, R. Pöttgen:
"Intermetallic compounds" in Rare Earth Chemistry
De Gruyter, 2020 Chapter 2.4, 163-176.
[DOI: 10.1515/9783110654929]

4

R. Pöttgen, O. Janka:
"High-Temperature Methods" in Handbook of Solid State Chemistry
Wiley-VCH, 2017Volume 2: Synthesis, Chapter 1, 1-21.
[DOI: 10.1002/9783527691036.hsscvol2003]

3

O. Janka, R. Pöttgen:
"Reactive Fluxes" in Handbook of Solid State Chemistry
Wiley-VCH, 2017Volume 2: Synthesis, Chapter 10, 275-286.
[DOI: 10.1002/9783527691036.hsscvol2012]

2

O. Janka, S. M. Kauzlarich:
"Zintl Compounds" in Encyclopedia of Inorganic and Bioinorganic Chemistry
Wiley, 2013, 1–14.
[DOI: 10.1002/9781119951438.eibc0244.pub2]

1

Th. Schleid, H. Müller-Bunz, O. Janka:
"Geo-Inspired Phosphors Based on Rare- Earth Metal(III) Fluorides with Complex Oxoanions: I. Fluoride Oxocarbonates and Oxosilicates", in Minerals as Advanced Materials II
Springer, 2012, 353–366.
[DOI: 10.1007/978-3-642-20018-2_33]

6

E. C. J. Gießelmann, R. Pöttgen, O. Janka:
Laves phases: superstructures induced by coloring and distortions
Z. Allg. Anorg. Chem. 2023, accepted.
[DOI: 10.1002/zaac.202300109]

5

R. Pöttgen, O. Janka:
CeCr₂Al₂₀-type intermetallics – Structure-property relationships
Rev. Inorg. Chem. 2023, accepted.

4

S. Engel, E. Gießelmann, R. Pöttgen, O. Janka:                                                                                                                                          
Trivalent Europium – A scarce case in intermetallics
Rev. Inorg. Chem. 2023, accepted.
[DOI: 10.1515/revic-2023-0003]

3

O. Janka, R. Pöttgen:
The Role of Beryllium in Alloys, Zintl Phases and Intermetallic Compounds
Z. Naturforsch. 2020, 75b, 421-439.
[DOI: 10.1515/znb-2019-0105]

2

O. Janka, O. Niehaus, R. Pöttgen, B. Chevalier:
Cerium Intermetallics with TiNiSi-Type Structure
Z. Naturforsch. 2016, 71b, 737-764.
[DOI: 10.1515/znb-2016-0101]

1

R. Pöttgen, O. Janka, B. Chevalier:
Cerium Intermetallics CeTX - Review III
Z. Naturforsch. 2016, 71b, 165-191.
[DOI: 10.1515/znb-2016-0013]

147

F. Hartmann, M. Bitsch, B.-J. Niebuur, M. Koch, T. Kraus, C. Dietz, R. W. Stark, C. R. Everett, P. Müller-Buschbaum, O. Janka, M. Gallei:
Self-Assembly of Polymer-Modified FePt Magnetic Nanoparticles and Block Copolymers
materials 2023, 16, 5503.
[DOI: 10.3390/ma16165503]

146

M. A. Mohamed, S. Arnold, O. Janka, A. Quade, J. Schmauch, V. Presser, G. Kickelbick:
Continuous wet chemical synthesis of Mo(C,N,O)_x as anode materials for Li-ion batteries
J. Mater. Chem. A 2023, accepted.
[DOI: 10.1039/d3ta03340f]

145

T. Büttner, O. Janka, V. Huch, D. Dhara, A. Jana, D. Scheschkewitz:
Single-Source Precursors for the Chemical Vapor Deposition of Iron Germanides
Eur. J. Inorg. Chem. 2023, accepted.
[DOI: 10.1002/ejic.202300433]

144

A. Feuerstein, B. Boßmann, T. Rittner, R. Leiner, O. Janka, M. Gallei, A. Schäfer:
Polycobaltoceniumylmethylene – A Water-Soluble Polyelectrolyte Prepared by Ring-Opening Transmetalation Polymerization
ACS Macro Lett. 2023, 12, 1019-1024.
[DOI: 10.1021/acsmacrolett.3c00336]

143

E. C. J. Gießelmann, R. Pöttgen, O. Janka:
Laves phases: superstructures induced by coloring and distortions
Z. Allg. Anorg. Chem. 2023, e202300109.
[DOI: 10.1002/zaac.202300109]

142

E. C. J. Gießelmann, S. Engel, Israa El Saudi, L. Schumacher, M. Radzieowski, J. M. Gerdes, O. Janka:
On the RE₂TiAl₃ (RE = Y, Gd–Tm, Lu) series – the first aluminum representatives of the rhombohedral Mg₂Ni₃Si type structure
Solids 2023, 4, 166-180.
[DOI: 10.3390/solids4030011]

141

R. Pöttgen, O. Janka:
CeCr₂Al₂₀-type intermetallics – Structure-property relationships
Rev. Inorg. Chem. 2023, accepted.
[DOI: 10.1515/revic-2023-0012]

140

E. C. J. Gießelmann, M. Radzieowski, S. F. Matar, O. Janka:
Formation of the Sub-Oxide Sc₄Au₂O_1–x and Drastically Negative ²⁷Al NMR Shift in Sc₂Al
Inorg. Chem. 2023, 62, 9602-9617.
[DOI: 10.1021/acs.inorgchem.3c01097]

139

J. Wiethölter , A. Koldemir , M. K. Reimann , T. Block , J. Kösters , O. Janka, R. Pöttgen:
Mössbauer-spectroscopic characterization of the stannides Sr₂Pd₂Sn and Eu₂Pd₂Sn
Z. Naturforsch. B 2023, accepted.
[DOI: 10.1515/znb-2023-0015]

138

137

E. C. J. Gießelmann, S. Engel, W. Kostusiak, Y. Zhang, P. Herbeck-Engel, G. Kickelbick, O. Janka:
Raman and NMR Spectroscopic and Theoretical Investigations of the Cubic Laves-Phases REAl₂ (RE = Sc, Y, La, Yb, Lu)
Dalton Trans. 2023, 52, 3391-3402.
[DOI: 10.1039/D3DT00141E]

136

A. Michaely, O. Janka, E. C. J. Gießelmann, R. Haberkorn, H. T. A. Wiedemann, C. W. M. Kay, G. Kickelbick:
Black Titania and Niobia within Ten Minutes – Mechanochemical Reduction of Metal Oxides with Alkali Metal Hydrides
Chem. Eur. J. 2023, 29, e202300223.
[DOI: 10.1002/chem.202300223]

135

S. Engel, E. C. J. Gießelmann, L. E. Schank, G. Heymann, K. Brix, R. Kautenburger, H. P. Beck, O. Janka:
Theoretical and ²⁷Al NMR Spectroscopic Investigations of Binary Intermetallic Alkaline-Earth Aluminides
Inorg. Chem. 2023, 62, 4260–4271.
[DOI: 10.1021/acs.inorgchem.2c04391]

134

S. Engel, N. Zaremba, R. S. Touzani, O. Janka:
Eu₄Al₁₃Pt₉ – A Coloring Variant of the Ho₄Ir₁₃Ge₉ Type Structure
Z. Naturforsch. 2023, 78b, 147-156.
[DOI: 10.1515/znb-2023-0300]

133

M. A. Mohamed, S. Arnold, O. Janka, A. Quade, V. Presser, G. Kickelbick:
Self-activation of Inorganic-Organic Hybrids derived via Continuous Synthesis of Polyoxomolybdate and para-Phenylenediamine enables very High Lithium-Ion Storage Capacity
ChemSusChem 2022, 16, e202202213.
[DOI: 10.1002/cssc.202202213]

132

N. Zaremba, V. Pavlyuk, F. Stegemann, V. Hlukhyy, S. Engel, S. Klenner, R. Pöttgen, O. Janka:
MAl₄Ir₂ (M = Ca, Sr, Eu) – Superstructures of the KAu₄In₂ type
Monatsh. Chem. 2022, 154, 43–52.
[DOI: 10.1007/s00706-022-03005-8]

131

H. Hübner, B.-J. Niebuur, O. Janka, L. Gemmer, M. Koch, T. Kraus, G. Kickelbick, B. Stühn, M. Gallei:
Crystalline Carbosilane-Based Block Copolymers: Synthesis by Anionic Polymerization and Morphology Evaluation in the Bulk State
Macromol. Chem. Phys. 2022, 225, 2200178.
[DOI: 10.1002/macp.202200178]

130

J. Keuter, M. Dimitrova, O. Janka, A. Hepp, R. J. F. Berger, F. Lips:
An Anionic Amido-Substituted Seven-Vertex Siliconoid Cluster
Chem. Eur. J. 2022, 28, e202201473.
[DOI: 10.1002/chem.202201473]

129

S. Baur, K. Brix, A. Feuerstein, O. Janka, R. Kautenburger:
Retention of waste cocktail elements onto characterised calcium silicate hydrate (C–S–H) phases: A kinetic study under highly saline and hyperalkaline conditions
Appl. Geochem. 2022, 143, 105319.
[DOI: 10.1016/j.apgeochem.2022.105319]

128

J. P. Scheifers, J. Flores, O. Janka, R. Pöttgen,B. P.T. Fokwa:
Triangular Arrangement of Ferromagnetic Iron Chains in the High-T_C Ferromagnet TiFe_1−xOs_2+xB₂
Chem. Eur. J. 2022, 28, e202201058.
[DOI: 10.1002/chem.202201058]

127

S. Engel, J. Bönnighausen, F. Stegemann, R. S. Touzani, O. Janka:
SrAl₅Pt₃ and Sr₂Al₁₆Pt₉ – two new strontium aluminum platinides
Z. Naturforsch B. 2022, 77, 367-379.
[DOI: 10.1515/znb-2022-0012]

126

M. Hämmer, F. Pielnhofer, O. Janka, H. Takahashi, P. Gross, R. Pöttgen, H. A. Höppe:
Polymorphism and Optical, Magnetic and Thermal Properties of the either Phyllo- or Inosilicate-analogous Borosulfate Cu[B₂(SO₄)₄]
Dalton Trans. 2022, 51, 3104-3115.
[DOI: 10.1039/D1DT04090A]

125

A. K. Boehm, S. Husmann, M. Besch, O. Janka, V. Presser, M. Gallei:
Porous Mixed-Metal Oxide Li-Ion Battery Electrodes by Shear-Induced Co-assembly of Precursors and Tailored Polymer Particles
ACS Appl. Mater. Interfaces 2021, 13, 61166-61179.

124

W. Cao, S. Yin, M. Bitsch, S. Liang, M. Plank, M. Opel, M. A. Scheel, M. Gallei, O. Janka, M. Schwartzkopf, S. V. Roth, P. Müller-Buschbaum:
In Situ Study of FePt Nanoparticles-Induced Morphology Development during Printing of Magnetic Hybrid Diblock Copolymer Films
Adv. Funct. Mater. 2021, 32, 2107667.

123

E. Gießelmann, Rachid S. Touzani, B. Morgenstern, O. Janka:
Synthesis, Crystal and Electronic Structure of CaNi₂Al₈
Z. Naturforsch. 2021, 76b, 659-668.

122

F. Stegemann, T. Block, S. Klenner, Y. Zhang, B. P. T. Fokwa, C. Doerenkamp, H. Eckert, O. Janka:
Structural, Physical, Theoretical and Spectroscopic Investigations of Mixed-Valent Eu₂Ni₈Si₃ and its Structural anti-Type Sr₂Pt₃Al₈
Eur. J. Inorg. Chem. 2021, 3832-3845.

121

l. Wang, K. Frisella, P. Srimuk, O. Janka, G. Kickelbick, V. Presser:
Electrochemical lithium recovery with lithium iron phosphate: What causes performance degradation and how can we improve the stability?
Sustain. Energy Fuels 2021, 5, 3124-3133.

120

S. Pohl, O. Janka, E. Füglein, G. Kickelbick:
Thermoplastic Silsesquioxane Hybrid Polymers with a Local Ladder-Type Structure
Macromolecules 2021, 54, 3873–3885.

119

E. Selb, T. Buttlar, O. Janka, M. Tribus, S. G. Ebbinghaus, G. Heymann:
Multianvil high-pressure/high-temperature synthesis and characterization of magnetoelectric HP-Co₃TeO₆
J. Mater. Chem. C 2021, 9, 5486–5496.

118

D. D. Zimmermann, O. Janka, C. Buyer, R. Niewa, Th. Schleid:
Nd₅OF₅Se₄ and Sm₅OF₅Se₄: New layered oxide fluoride selenides of the lanthanoids
Solid State Sci. 2021, 116, 106601.

117

P. Shankhari, O. Janka, R. Pöttgen, B. P. T. Fokwa:
Rare-Earth-free Magnets: Enhancing Magnetic Anisotropy and Spin Exchange Toward High-T_C Hf₂MIr₅B₂(M = Mn, Fe)
J. Am. Chem. Soc. 2021, 143, 4205–4212.

116

E. M. Heppke, S. Klenner, O. Janka, R. Pöttgen, T. Bredow, M. Lerch:
Cu₂ZnSbS₄ – A thioantimonate(V) with remarkably strong covalent Sb–S bonding
Inorg. Chem. 2021, 60, 2730–2739.

115

M. Radzieowski, T. Block, J. Koppe, M. R. Hansen, R. Pöttgen, O. Janka:
(Pseudo)binary Antimonides: Insights on Local Ordering and Effective Charge Configurations from ¹²¹Sb MAS NMR and Mössbauer Spectroscopies
J. Phys. Chem. C, 2021, 125, 1454–1466.

114

P. Pues, F. Baur, S. Schwing, D. Rytz, R. Pöttgen, C. Paulsen, O. Janka, B. Rendenbach, D. Johrendt, T. Jüstel:
Temperature and time-dependent luminescence of single crystals of KTb₃F₁₀
J. Lumin, 2020, 227, 117523.

113

L. Pasqualini, O. Janka, S. Olthof, H. Huppertz, K. Liedl, R. Pöttgen, M. Podewitz, J. Bruns:
Ni[B₂(SO₄)₄] and Co[B₂(SO₄)₄]: Unveiling systematic trends in phyllosilicate analogue borosulfates
Chem. Eur. J., 2020, 26, 17405-17415.

112

C. Funk, O. Reckeweg, F. J. DiSalvo, A. Schulz, S. Klenner, R. Pöttgen, O. Janka, Th. Schleid:
A New Class of Mixed-Valent Europium Halide ortho-Oxoborates: Eu₆X[BO₃]₄ (X = Cl, Br and I)
J. Alloys Compd., 2020, 844, 156038.

111

M. Hämmer, O. Janka, J. Böddinghausen, S. Klenner, R. Pöttgen, H. A. Höppe:
On the Phosphors Na₅M(WO₄)₄ (M = Y, La-Nd, Sm-Lu, Bi) - Crystal Structures, Thermal Decomposition, Optical and Magnetic Properties
Dalton Trans., 2020, 49, 8209-8225 .

110

F. Eustermann, M. Eilers-Rethwisch, M. K. Reimann, O. Janka:
Synthesis and magnetic properties of the extended RE₄Pd₉Al₂₄ series (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu)
Z. Naturforsch. B, 2020, 75, 633-641.

109

F. Eustermann, M. Eilers-Rethwisch, M. K. Reimann, O. Janka:
Structural transition and antiferromagnetic ordering in the solid solution CePd_1–xAu_xAl (x = 0.1–0.9)
Z. Naturforsch. B, 2020, 75, 895-901.

108

M. Radziewoski, S. Klenner, R.-D. Hoffmann, O. Janka:
Structure Solution of Incommensurately Modulated La₆MnSb₁₅
Z. Kristallogr., 2020, 235, 291-301.

107

F. Stegemann, Y. Zhang, B. P. T. Fokwa, O. Janka:
On the Formation of the Gd₃Ru₄Al₁₂ versus the Y₂Co₃Ga₉ Type Structure – M₃Rh₄Al₁₂ (M = Ca, Eu) versus M₂T₃Al₉ (M = Ca, Sr, Eu, Yb; T = Ir, Pt).
Dalton Trans., 2020, 49, 6398-6406.

106

M. Zoller, R. Bubnova, S. Filatov, Y. Biryukov, E. Haussühl, R. Pöttgen, O. Janka, S. Penner, C. Praty, H. Fitzek, J. Winkler, H. Huppertz:
Elucidating the physical properties of the molybdenum oxide Mo₄O₁₁ and its tantalum substituted variant Mo₂Ta₂O₁₁
Z. Kristallogr., 2020, 235, 143-155.

105

M. Radzieowski, F. Stegemann, S. Klenner, O. Janka:
On the Divalent Character of the Eu Atoms in the Ternary Zintl Phases Eu₅In₂Pn₆ and Eu₃MAs₃ (Pn = As-Bi; M = Al, Ga)
Mater. Chem. Front., 2020, 4, 1231-1248.
[DOI: 10.1039/C9QM00703B]

104

M. Radzieowski, F. Stegemann, O. Janka:
Magnetic Properties of the RE₂Pt₆X₁₅ (RE = Y, La-Nd, Sm, Gd-Lu; X = Al, Ga) Series
Eur. J. Inorg. Chem., 2020, 1199-1210.
[DOI: 10.1002/ejic.201901332]

103

S. Engelbert, O. Janka, S. Klenner, R. Pöttgen:
Tin-rich Phases RE₂Au₃Sn₆ with RE = La, Ce, Pr, Nd, Sm - Synthesis, Structure, Magnetic Properties, and ¹¹⁹Sn Mössbauer Spectra
Z. Anorg. Allg. Chem., 2020, 646, 1508-1516.
[DOI: 10.1002/zaac.201900329]

M. Radzieowski, F. Stegemann, J. Bönnighausen, O. Janka:
Physical and Magnetocaloric Properties of TbPdAl₂ and the Ferromagnetic Solid Solution Tb_1-xLu_xPdAl₂ (x = 0.1-0.9)
Inorg. Chem., 2020, 59, 1137-1144.
[DOI: 10.1021/acs.inorgchem.9b02753]

101

C. Paulsen, T. Block, C. Benndorf, O. Oeckler, J. Bönnighausen, O. Janka, R. Pöttgen:
Au₄ squares and linear infinite cadmium chains as building units in the intermetallic phases REAu₄Cd₂ (RE = La-Nd, Sm) with YbAl₄Mo₂ type structure
Z. Naturforsch., 2020, 75b, 73-82.
[DOI: 10.1515/znb-2019-0153]

100

M. Witt, J. Bönnighausen, F. Eustermann, A. Savourat, J. Scheifers, B. P. T. Fokwa, C. Doerenkamp, H. Eckert, O. Janka:
Extending the Knowledge on the Quaternary Rare Earth Nickel Aluminum Germanides of the RENiAl₄Ge₂ Series (RE = Y, Sm, Gd-Tm, Lu) - Structural, Magnetic and NMR-Spectroscopic Investigations
Z. Naturforsch., 2020, 75b, 149-162.
[DOI: 10.1515/znb-2019-0176]

O. Janka, R. Pöttgen:
The Role of Beryllium in Alloys, Zintl Phases and Intermetallic Compounds
Z. Naturforsch., 2020, 75b, 421-439.
[DOI: 10.1515/znb-2019-0105]