2024

Kubitza, Niels ; Beckmann, Benedikt ; Jankovic, Sanja ; Skokov, Konstantin P. ; Riaz, Aysha A. ; Schlueter, Christoph ; Regoutz, Anna ; Gutfleisch, Oliver ; Birkel, Christina S. (2024)
Exploring the potential of nitride and carbonitride MAX phases: synthesis, magnetic and electrical transport properties of V2GeC, V2GeC0.5N0.5, and V2GeN.
In: Chemistry of Materials, 36 (3)
doi: 10.1021/acs.chemmater.3c02510
Artikel, Bibliographie

Kubitza, Niels ; Huck, Isabel ; Pazniak, Hanna ; Kalha, Curran ; Koch, David ; Zhao, Bo ; Thakur, Pardeep K. ; Lee, Tien-Lin ; Riaz, Aysha A. ; Donner, Wolfgang ; Zhang, Hongbin ; Moss, Benjamin ; Wiedwald, Ulf ; Regoutz, Anna ; Birkel, Christina S. (2024)
Between carbide and nitride MAX phases: sol–gel assisted synthesis and characterization of the carbonitride phase Cr₂GaC₁₋ₓNₓ.
In: Journal of Materials Chemistry C, 12 (21)
doi: 10.1039/D4TC00067F
Artikel, Bibliographie

Büchner, Carina ; Kubitza, Niels ; Malik, Ali M. ; Jamboretz, John ; Riaz, Aysha A. ; Zhu, Yujiang ; Schlueter, Christoph ; McCartney, Martha R. ; Smith, David J. ; Regoutz, Anna ; Rohrer, Jochen ; Birkel, Christina S. (2024)
Chemical conversions within the Mo-Ga-C system: layered solids with variable Ga content.
In: Inorganic Chemistry, 63 (17)
doi: 10.1021/acs.inorgchem.4c00107
Artikel, Bibliographie

Sinclair, Jordan ; Siebert, Jan Paul ; Flores, Matt ; Ciota, David ; Seo, Dong-Kyun ; Birkel, Christina S. (2024)
High surface area of carbonaceous Cr2GaC composite microspheres synthesized by sol-gel chemistry.
In: New Journal of Chemistry, 48 (24)
doi: 10.1039/D4NJ02038C
Artikel, Bibliographie

Sinclair, Jordan ; Flores, Marco ; Brugh, Alexander M. ; Rajh, Tijana ; Juelsholt, Mikkel ; Riaz, Aysha A. ; Schlueter, Christoph ; Regoutz, Anna ; Birkel, Christina S. (2024)
In-depth analysis of the species and transformations during sol sel-assisted V2PC synthesis.
In: Inorganic Chemistry, 63 (23)
doi: 10.1021/acs.inorgchem.4c01160
Artikel, Bibliographie

2023

Kubitza, Niels ; Xie, Ruiwen ; Tarasov, Ivan ; Shen, Chen ; Zhang, Hongbin ; Wiedwald, Ulf ; Birkel, Christina S. (2023)
Microwave-Assisted Synthesis of the New Solid-Solution (V1–xCrx)2GaC (0 ≤ x ≤ 1), a Pauli Paramagnet Almost Matching the Stoner Criterion for x = 0.80.
In: Chemistry of Materials, 35 (11)
doi: 10.1021/acs.chemmater.3c00591
Artikel, Bibliographie

Snyder, Rose M. ; Juelsholt, Mikkel ; Kalha, Curran ; Holm, Jason ; Mansfield, Elisabeth ; Lee, Tien Lin ; Thakur, Pardeep K. ; Riaz, Aysha A. ; Moss, Benjamin ; Regoutz, Anna ; Birkel, Christina S. (2023)
Detailed analysis of the synthesis and structure of MAX phase (Mo0.75V0.25)5AlC4 and its MXene sibling (Mo0.75V0.25)5C4.
In: ACS Nano, 17 (13)
doi: 10.1021/acsnano.3c03395
Artikel, Bibliographie

Kubitza, Niels ; Büchner, Carina ; Sinclair, Jordan ; Snyder, Rose M. ; Birkel, Christina S. (2023)
Extending the chemistry of layered solids and nanosheets: chemistry and structure of MAX phases, MAB phases and MXenes.
In: ChemPlusChem, 88 (8)
doi: 10.1002/cplu.202300214
Artikel, Bibliographie

Kubitza, Niels ; Babaei, Pedram ; Wiedwald, Ulf ; Birkel, Christina S. (2023)
Rapid sol-gel synthesis approach for the preparation of the magnetocaloric antiperovskite Mn3GaC.
In: Chemistry of Materials, 35 (21)
doi: 10.1021/acs.chemmater.3c01905
Artikel, Bibliographie

2022

Siebert, Jan P. ; Juelsholt, Mikkel ; Günzing, Damian ; Wende, Heiko ; Ollefs, Katharina ; Birkel, Christina S. (2022)
Towards a mechanistic understanding of the sol-gel syntheses of ternary carbides.
In: Inorganic Chemistry Frontiers, 9 (7)
doi: 10.1039/D2QI00053A
Artikel, Bibliographie

Siebert, Jan P. ; Patarakun, Keene ; Birkel, Christina S. (2022)
Mechanistic Insights into the Nonconventional Sol-Gel Synthesis of MAX Phase M2GeC (M = V, Cr).
In: Inorganic Chemistry, 61 (3)
doi: 10.1021/acs.inorgchem.1c03415
Artikel, Bibliographie

Reitz, Andreas ; Pazniak, Hanna ; Shen, Chen ; Singh, Harish K. ; Jayanthi, K. ; Kubitza, Niels ; Navrotsky, Alexandra ; Zhang, Hongbin ; Wiedwald, Ulf ; Birkel, Christina S. (2022)
Cr3GeN: A Nitride with Orthorhombic Antiperovskite Structure.
In: Chemistry of Materials, 34 (23)
doi: 10.1021/acs.chemmater.2c01524
Artikel, Bibliographie

Jamboretz, John ; Reitz, Andreas ; Birkel, Christina S. (2022)
Development of a Raman spectroscopy system for in situ monitoring of microwave-assisted inorganic transformations.
In: Journal of Raman Spectroscopy
doi: 10.1002/jrs.6478
Artikel, Bibliographie

Kubitza, Niels ; Reitz, Andreas ; Zieschang, Anne-Marie ; Pazniak, Hanna ; Albert, Barbara ; Kalha, Curran ; Schlueter, Christoph ; Regoutz, Anna ; Wiedwald, Ulf ; Birkel, Christina S. (2022)
From MAX phase carbides to nitrides: Synthesis of V2GaC, V2GaN and the carbonitride V2GaC1-xNx.
In: Inorganic Chemistry, 61 (28)
doi: 10.1021/acs.inorgchem.2c00200
Artikel, Bibliographie

Sinclair, Jordan ; Siebert, Jan P. ; Juelsholt, Mikkel ; Shen, Chen ; Zhang, Hongbin ; Birkel, Christina S. (2022)
Sol Gel-Based Synthesis of the Phosphorus-Containing MAX Phase V2PC.
In: Inorganic Chemistry, 61 (43)
doi: 10.1021/acs.inorgchem.2c02880
Artikel, Bibliographie

Siebert, Jan Paul ; Hajra, Debarati ; Tongay, Sefaattin ; Birkel, Christina S. (2022)
The synthesis and electrical transport properties of Carbon/Cr2GaC MAX phase composite microwires.
In: Nanoscale, 14 (3)
doi: 10.1039/d1nr06780j
Artikel, Bibliographie

2021

Siebert, Jan P. ; Flores, Matthew ; Birkel, Christina S. (2021)
Shape Control of MAX Phases by Biopolymer Sol-Gel Synthesis: Cr2GaC Thick Films, Microspheres, and Hollow Microspheres.
In: ACS Organic & Inorganic Au, 2 (1)
doi: 10.1021/acsorginorgau.1c00022
Artikel, Bibliographie

Siebert, Jan P. ; Mallett, Shayna ; Juelsholt, Mikkel ; Pazniak, Hanna ; Wiedwald, Ulf ; Page, Katharine ; Birkel, Christina S. (2021)
Structure determination and magnetic properties of the Mn-doped MAX phase Cr2GaC.
In: Materials Chemistry Frontiers, 5 (16)
doi: 10.1039/d1qm00454a
Artikel, Bibliographie

2020

Tran, Minh H. ; Brilmayer, Robert ; Liu, Lei ; Zhuang, Houlong ; Hess, Christian ; Andrieu-Brunsen, Annette ; Birkel, Christina S. (2020)
Synthesis of a Smart Hybrid MXene with Switchable Conductivity for Temperature Sensing.
In: ACS Applied Nano Materials, 3 (5)
doi: 10.1021/acsanm.0c00118
Artikel, Bibliographie

Tran, Minh Hai ; Malik, Ali Muhammad ; Dürrschnabel, Michael ; Regoutz, Anna ; Thakur, Pardeep ; Lee, Tien-Lin ; Perera, Delwin ; Molina-Luna, Leopoldo ; Albe, Karsten ; Rohrer, Jochen ; Birkel, Christina S. (2020)
Experimental and theoretical investigation of the chemical exfoliation of Cr-based MAX phase particles.
In: Dalton Transactions, 49 (35)
doi: 10.1039/D0DT01448F
Artikel, Bibliographie

2019

Siebert, Jan P. ; Hamm, Christin M. ; Birkel, Christina S. (2019)
Microwave heating and spark plasma sintering as non-conventional synthesis methods to access thermoelectric and magnetic materials.
In: Applied Physics Reviews, 6 (4)
doi: 10.1063/1.5121442
Artikel, Bibliographie

Siebert, Jan Paul ; Bischoff, Lothar ; Lepple, Maren ; Zintler, Alexander ; Molina-Luna, Leopoldo ; Wiedwald, Ulf ; Birkel, Christina S. (2019)
Sol-gel based synthesis and enhanced processability of MAX phase Cr2GaC.
In: Journal of Materials Chemistry C, 7 (20)
doi: 10.1039/C9TC01416K
Artikel, Bibliographie

2018

Tran, Minh H. ; Schäfer, Timo ; Shahraei, Ali ; Dürrschnabel, Michael ; Molina-Luna, Leopoldo ; Kramm, Ulrike I. ; Birkel, Christina S. (2018)
Adding a New Member to the MXene Family: Synthesis, Structure, and Electrocatalytic Activity for the Hydrogen Evolution Reaction of V4C3Tx.
In: ACS Applied Energy Materials, 1 (8)
doi: 10.1021/acsaem.8b00652
Artikel, Bibliographie

Birkel, Christina S. ; Zeier, Wolfgang G. ; Lunkenbein, Thomas ; Hlukhyy, Viktor (2018)
Trendbericht Festkörperchemie 2017.
In: Nachrichten aus der Chemie, 66 (3)
doi: 10.1002/nadc.20184071885
Artikel, Bibliographie

Hamm, Christin M. ; Dürrschnabel, Michael ; Molina-Luna, Leopoldo ; Salikhov, Ruslan ; Spoddig, Detlef ; Farle, Michael ; Wiedwald, Ulf ; Birkel, Christina S. (2018)
Structural, magnetic and electrical transport properties of non-conventionally prepared MAX phases V2AlC and (V/Mn)2AlC.
In: Materials Chemistry Frontiers, 2
doi: 10.1039/C7QM00488E
Artikel, Bibliographie

Bischoff, Lothar ; Stephan, Michael ; Birkel, Christina S. ; Litterscheid, Christian F. ; Dreizler, Andreas ; Albert, Barbara (2018)
Multiscale and luminescent, hollow microspheres for gas phase thermometry.
In: Scientific Reports, 8 (1)
doi: 10.1038/s41598-017-18942-2
Artikel, Bibliographie

2017

Hamm, Christin M. ; Diop, Léopold V. B. ; Zhang, Hogbin ; Gutfleisch, Oliver ; Birkel, Christina S. (2017)
Microwave synthesis and magnetic properties of Laves-type Ti2M3Si (M = Mn, Fe, Co, Ni).
In: physica status solidi (c), 14 (3-4)
doi: 10.1002/pssc.201700027
Artikel, Bibliographie

Hamm, Christin M. ; Bocarsly, Joshua D. ; Seward, Gareth ; Kramm, Ulrike I. ; Birkel, Christina S. (2017)
Non-conventional synthesis and magnetic properties of MAX phases (Cr/Mn)2AlC and (Cr/Fe)2AlC.
In: Journal of Materials Chemistry C, 5 (23)
doi: 10.1039/C7TC00112F
Artikel, Bibliographie

2016

Hamm, Christin M. ; Schäfer, Timo ; Zhang, Hongbin ; Birkel, Christina S. (2016)
Non-conventional Synthesis of the 413 MAX Phase V4AlC3.
In: Zeitschrift für anorganische und allgemeine Chemie, 642 (23)
doi: 10.1002/zaac.201600370
Artikel, Bibliographie

Hamm, Christin M. ; Birkel, Christina S. (2016)
Field assisted synthesis of M2AlC (M = Ti, V, Cr) MAX Phases.
Konferenzveröffentlichung, Bibliographie

Lauenstein, Raphael ; Hamm, Christin M. ; Birkel, Christina S. (2016)
Solid state microwave synthesis of Ti2SnC MAX Phase.
Konferenzveröffentlichung, Bibliographie

Hamm, Christin M. ; Gölden, Dominik ; Hildebrandt, Erwin ; Weischenberg, Jürgen ; Zhang, Hongbin ; Alff, Lambert ; Birkel, Christina S. (2016)
Magnetic properties of the Laves-type phases Ti2Co3Si and Ti2Fe3Si and their solid solution.
In: J. Mater. Chem. C, 4 (31)
doi: 10.1039/c6tc02043g
Artikel, Bibliographie

2014

Claudio, Tania ; Bessas, Dimitrios ; Birkel, Christina S. ; Kieslich, Gregor ; Panthöfer, Martin ; Sergueev, Ilya ; Tremel, Wolfgang ; Hermann, Raphael P. (2014)
Enhanced Debye level in nano Zn1+xSb, FeSb2, and NiSb: Nuclear inelastic spectroscopy on 121Sb.
In: Physica Status Solidi (B), 251 (5)
Artikel, Bibliographie

Douglas, Jason E. ; Birkel, Christina S. ; Verma, Nisha ; Miller, Victoria M. ; Miao, Mao-Sheng ; Stucky, Galen D. ; Pollock, Tresa M. ; Seshadri, Ram (2014)
Phase stability and property evolution of biphasic Ti-Ni-Sn alloys for use in thermoelectric applications.
In: Journal of Applied Physics, 115 (4)
Artikel, Bibliographie

Kieslich, Gregor ; Birkel, Christina S. ; Veremchuk, Igor ; Grin, Yuri ; Tremel, Wolfgang (2014)
Thermoelectric properties of spark-plasma sintered nanoparticular FeSb2 prepared via a solution chemistry approach.
In: Dalton transactions (Cambridge, England : 2003), 43 (2)
Artikel, Bibliographie

Kieslich, Gregor ; Burkhardt, Ulrich ; Birkel, Christina S. ; Veremchuk, Igor ; Douglas, Jason E. ; Gaultois, Michael W. ; Lieberwirth, Ingo ; Seshadri, Ram ; Stucky, Galen D. ; Grin, De Yuri ; Tremel, Wolfgang (2014)
Enhanced thermoelectric properties of the n-type Magnéli phase WO2.90: Reduced thermal conductivity through microstructure engineering.
In: Journal of Materials Chemistry A, 2
Artikel, Bibliographie

Zhang, Yichi ; Bahk, Je-Hyeong ; Lee, Joun ; Birkel, Christina S. ; Snedaker, Matthew L. ; Liu, Deyu ; Zeng, Hongmei ; Moskovits, Martin ; Shakouri, Ali ; Stucky, Galen D. (2014)
Hot Carrier Filtering in Solution Processed Hetero-structures : a Paradigm for Improving Thermoelectric Efficiency.
In: Advanced Materials, 26
Artikel, Bibliographie

2013

Snedaker, Matthew L. ; Zhang, Yichi ; Birkel, Christina S. ; Wang, Heng ; Day, Tristan ; Shi, Yifeng ; Ji, Xiulei ; Kraemer, Stephan ; Mills, Carolyn E. ; Moosazadeh, Armin ; Moskovits, Martin ; Je, G. ; Stucky, Galen D. (2013)
Silicon-Based Thermoelectrics Made from a Boron-Doped Silicon Dioxide Nanocomposite.
In: Chemistry of Materials, 25 (24)
doi: 10.1021/cm401990c
Artikel, Bibliographie

Birkel, Christina S. ; Douglas, Jason E. ; Lettiere, Bethany R. ; Seward, Gareth ; Zhang, Yichi ; Pollock, Tresa M. ; Seshadri, Ram ; Stucky, Galen D. (2013)
Influence of Ni nanoparticle addition and spark plasma sintering on the TiNiSn-Ni system: Structure, microstructure, and thermoelectric properties.
In: Solid State Sciences, 26
Artikel, Bibliographie

Kieslich, Gregor ; Veremchuk, Igor ; Antonyshyn, Iryna ; Zeier, Wolfgang G. ; Birkel, Christina S. ; Weldert, Kai ; Heinrich, Christophe P. ; Visnow, Eduard ; Panthöfer, Martin ; Burkhardt, Ulrich ; Grin, Yuri ; Tremel, Wolfgang (2013)
Using crystallographic shear to reduce lattice thermal conductivity: high temperature thermoelectric characterization of the spark plasma sintered Magnéli phases WO2.90 and WO2.722.
In: Phys. Chem. Chem. Phys., 15 (37)
Artikel, Bibliographie

Gaultois, Michael W. ; Barton, Phillip T. ; Birkel, Christina S. ; Misch, Lauren M. ; Rodriguez, Efrain E. ; Stucky, Galen D. ; Seshadri, Ram (2013)
Structural disorder, magnetism, and electrical and thermoelectric properties of pyrochlore Nd2Ru2O7.
In: Journal of physics. Condensed matter : an Institute of Physics journal, 25 (18)
Artikel, Bibliographie

Birkel, Christina S. ; Douglas, Jason E. ; Lettiere, Bethany R. ; Seward, Gareth ; Verma, Nisha ; Zhang, Yichi ; Pollock, Tresa M. ; Seshadri, Ram ; Stucky, Galen D. (2013)
Improving the thermoelectric properties of half-Heusler TiNiSn through inclusion of a second full-Heusler phase: microwave preparation and spark plasma sintering of TiNi1+xSn.
In: Phys. Chem. Chem. Phys., 15
Artikel, Bibliographie

Kieslich, Gregor ; Birkel, Christina S. ; Douglas, Jason E. ; Gaultois, Michael ; Veremchuk, Igor ; Seshadri, Ram ; Stucky, Galen D. ; Grin, Yuri ; Tremel, Wolfgang (2013)
SPS-assisted preparation of the Magnéli phase WO2.90 for thermoelectric application.
In: Journal of Materials Chemistry A, 1 (42)
Artikel, Bibliographie

2012

Douglas, Jason E. ; Birkel, Christina S. ; Miao, Mao-Sheng ; Torbet, Chris J. ; Stucky, Galen D. ; Pollock, Tresa M. ; Seshadri, Ram (2012)
Enhanced thermoelectric properties of bulk TiNiSn via formation of a TiNi2Sn second phase.
In: Applied Physics Letters, 101
Artikel, Bibliographie

Zhang, Yichi ; Day, Tristan ; Snedaker, Matthew L. ; Wang, Heng ; Krämer, Stephan ; Birkel, Christina S. ; Ji, Xiulei ; Liu, Deyu ; Snyder, G. Jeffrey ; Stucky, Galen D. (2012)
A Mesoporous Anisotropic n-Type Bi2Te3 Monolith with Low Thermal Conductivity as an Efficient Thermoelectric Material.
In: Advanced Materials, 24
Artikel, Bibliographie

Birkel, Alexander ; Darago, Lucy E. ; Morrison, Alasdair ; Lory, Laurianne ; George, Nathan C. ; Mikhailovsky, Alexander A. ; Birkel, Christina S. ; Seshadri, Ram (2012)
Microwave assisted preparation of Eu2+-doped Åkermanite Ca2MgSi2O7.
In: Solid State Sciences, 14
Artikel, Bibliographie

Birkel, Alexander ; Denault, Kristin A. ; George, Nathan C. ; Doll, Courtney E. ; Hery, Bathylle ; Mikhailovsky, Alexander A. ; Birkel, Christina S. ; Hong, Byung-chul ; Seshadri, Ram (2012)
Rapid Microwave Preparation of Highly Efficient Ce3+-Substituted Garnet Phosphors for Solid State White Lighting.
In: Chemistry of Materials, 24
Artikel, Bibliographie

Birkel, Christina S. ; Zeier, Wolfgang G. ; Douglas, Jason E. ; Lettiere, Bethany R. ; Mills, Carolyn E. ; Seward, Gareth ; Birkel, Alexander ; Snedaker, Matthew L. ; Zhang, Yichi ; Snyder, G. Jeffrey ; Pollock, Tresa M. ; Seshadri, Ram ; Stucky, Galen D. (2012)
Rapid Microwave Preparation of Thermoelectric TiNiSn and TiCoSb Half-Heusler Compounds.
In: Chemistry of Materials, 24 (13)
Artikel, Bibliographie

Zhang, Yichi ; Snedaker, Matthew L. ; Birkel, Christina S. ; Mubeen, Syed ; Ji, Xiulei ; Shi, Yifeng ; Liu, Deyu ; Liu, Xiaonao ; Moskovits, Martin ; Stucky, Galen D. (2012)
Silver-Based Intermetallic Heterostructures in Sb2Te3 Thick Films with Enhanced Thermoelectric Power Factors.
In: Nano Letters, 12
Artikel, Bibliographie

Sun, Qi ; Birkel, Christina S. ; Cao, Jinbo ; Tremel, Wolfgang ; Musfeldt, Janice L. (2012)
Spectroscopic Signature of the Superparamagnetic Transition and Surface Spin Disorder in CoFe2O4 Nanoparticles.
In: ACS Nano, (6)
Artikel, Bibliographie

2011

Birkel, Christina S. ; Claudio, Tania ; Panthöfer, Martin ; Birkel, Alexander ; Koll, Dominik ; Kieslich, Gregor ; Schmidt, Jürgen ; Hermann, Raphael ; Tremel, Wolfgang (2011)
Properties of spark plasma sintered nanostructured Zn1+xSb.
In: phys. stat. sol. a, 208 (8)
Artikel, Bibliographie

Kieslich, Gregor ; Birkel, Christina S. ; Stewart, Andrew ; Kolb, Ute ; Tremel, Wolfgang (2011)
Solution synthesis of nanoparticular binary transition metal antimonides.
In: Inorganic chemistry, 50 (15)
Artikel, Bibliographie

Birkel, Christina S. ; Kieslich, Gregor ; Bessas, Dimitrios ; Claudio, Tania ; Branscheid, Robert ; Kolb, Ute ; Panthöfer, Martin ; Hermann, Raphael ; Tremel, Wolfgang (2011)
Wet Chemical Synthesis and a Combined X-ray and Moessbauer Study of the Formation of FeSb2 Nanoparticles.
In: Inorganic Chemistry, 50 (22)
Artikel, Bibliographie

2010

Birkel, Christina S. ; Mugnaioli, Enrico ; Gorelik, Tatiana ; Kolb, Ute ; Panthöfer, Martin ; Tremel, Wolfgang (2010)
Solution synthesis of a new thermoelectric Zn(1+x)Sb nanophase and its structure determination using automated electron diffraction tomography.
In: Journal of the American Chemical Society, 132 (28)
Artikel, Bibliographie