Kristoffer Eggestad
About
Kristoffer Eggestad is a PhD-candidate in the Functional Materials and Materials Chemistry group (FACET) at NTNU. His research is mainly on ferroelectric domain walls for nanoelectronics using density functional theory (DFT) simulations.
Supervisor: Professor Sverre M. Selbach
Background
In 2016, Kristoffer started at the 5-year master's degree program called Chemical Engineering and Biotechnology at NTNU. He specialized in Materials Chemistry and Energy Technology and further in Functional Materials and Nanomaterials. In the spring of 2021, he wrote his master's thesis on solid state electrolytes for batteries, using DFT simulations as my main research method.
Competencies
Publications
2025
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Williamson, Benjamin Albert Dobson;
Eggestad, Kristoffer;
Selbach, Sverre Magnus.
(2025)
Pseudo-lithium vacancies in hydrogen rich Li<inf>3</inf>OCl.
Journal of Materials Chemistry A
Academic article
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Gullbrekken, Øystein;
Eggestad, Kristoffer;
Tsoutsouva, Maria;
Williamson, Benjamin Albert Dobson;
Rettenwander, Daniel;
Einarsrud, Mari-Ann.
(2025)
Phase Evolution and Thermodynamics of Cubic Li<inf>6.25</inf>Al<inf>0.25</inf>La<inf>3</inf>Zr<inf>2</inf>O<inf>12</inf> Studied by High-Temperature X-ray Diffraction.
Inorganic Chemistry
Academic article
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Zeiger, Caren Regine;
Eggestad, Kristoffer;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Williamson, Benjamin Albert Dobson;
Grande, Tor.
(2025)
Quantifying Emptiness: On the Size of A‑Site Vacancies in
Tetragonal Tungsten Bronzes.
Chemistry of Materials
Academic article
2024
-
Eggestad, Kristoffer;
Selbach, Sverre Magnus;
Williamson, Benjamin Albert Dobson.
(2024)
Doping implications of Li solid state electrolyte Li7La3Zr2O12.
Journal of Materials Chemistry A
Academic article
-
Eggestad, Kristoffer;
Williamson, Benjamin Albert Dobson;
Meier, Dennis;
Selbach, Sverre Magnus.
(2024)
Mobile intrinsic point defects for conductive neutral domain walls in LiNbO3.
Journal of Materials Chemistry C
Academic article
Journal publications
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Williamson, Benjamin Albert Dobson;
Eggestad, Kristoffer;
Selbach, Sverre Magnus.
(2025)
Pseudo-lithium vacancies in hydrogen rich Li<inf>3</inf>OCl.
Journal of Materials Chemistry A
Academic article
-
Gullbrekken, Øystein;
Eggestad, Kristoffer;
Tsoutsouva, Maria;
Williamson, Benjamin Albert Dobson;
Rettenwander, Daniel;
Einarsrud, Mari-Ann.
(2025)
Phase Evolution and Thermodynamics of Cubic Li<inf>6.25</inf>Al<inf>0.25</inf>La<inf>3</inf>Zr<inf>2</inf>O<inf>12</inf> Studied by High-Temperature X-ray Diffraction.
Inorganic Chemistry
Academic article
-
Zeiger, Caren Regine;
Eggestad, Kristoffer;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Williamson, Benjamin Albert Dobson;
Grande, Tor.
(2025)
Quantifying Emptiness: On the Size of A‑Site Vacancies in
Tetragonal Tungsten Bronzes.
Chemistry of Materials
Academic article
-
Eggestad, Kristoffer;
Selbach, Sverre Magnus;
Williamson, Benjamin Albert Dobson.
(2024)
Doping implications of Li solid state electrolyte Li7La3Zr2O12.
Journal of Materials Chemistry A
Academic article
-
Eggestad, Kristoffer;
Williamson, Benjamin Albert Dobson;
Meier, Dennis;
Selbach, Sverre Magnus.
(2024)
Mobile intrinsic point defects for conductive neutral domain walls in LiNbO3.
Journal of Materials Chemistry C
Academic article
Teaching
Outreach
2024
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Academic lectureEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Meier, Dennis; Selbach, Sverre Magnus. (2024) Point Defects and Domain Walls in Soft Ferroelectric CsGeX3 (X = Cl, Br, I). DPG DPG Spring Meeting , Berlin 2024-03-17 - 2024-03-22
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Academic lectureZeiger, Caren Regine; Eggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2024) What is the Size of a Cation Vacancy in Tetragonal Tungsten Bronzes?. ECAPD 2024 , Trondheim 2024-06-16 - 2024-06-19
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Academic lectureEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Meier, Dennis; Selbach, Sverre Magnus. (2024) Point Defects and Domain Walls in Soft Ferroelectric CsGeX3 (X = Cl, Br, I). MRS MRS Spring Meeting , Seattle 2024-04-22 - 2024-04-26
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Academic lectureEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Selbach, Sverre Magnus. (2024) On-the-fly Machine-Learned Potentials for MD Simulations of Ferroelectric Phase Transitions. E-MRS 2024 Fall Meeting , Warsaw 2024-09-16 - 2024-09-19
2023
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PosterEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Khalid, Muhammad Zeeshan; Meier, Dennis; Selbach, Sverre Magnus. (2023) Point Defects at Ferroelectric Domain Walls in LiNbO3. NKS-FUM 2023 2023-02-13 - 2023-02-14
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Academic lectureEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Khalid, Muhammad Zeeshan; Meier, Dennis; Selbach, Sverre Magnus. (2023) Point Defects at Ferroelectric Domain Walls in LiNbO3. IMF2023 , Tel Aviv 2023-03-26 - 2023-03-30
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PosterEggestad, Kristoffer; Selbach, Sverre Magnus; Williamson, Benjamin Albert Dobson. (2023) Doping Implications for Garnet Li7La3Zr2O12. LLZO4WC , Tromsø 2023-09-03 - 2023-09-07
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Popular scientific lectureKelly, Michael Robert; Hårberg, Sofie Brandtzæg; Eggestad, Kristoffer; Finnseth, Øyvind; Olsen, Gerhard Henning; Walker, Julian Bradley. (2023) Supermaterialer for en bærekraftig framtid. NTNU Researcher Night , Realfagbygget, Gløshaugen, NTNU 2023-09-28 - 2023-09-28
2022
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Popular scientific lectureKelly, Michael Robert; Hårberg, Sofie Brandtzæg; Eggestad, Kristoffer; Finnseth, Øyvind; Wiik, Kjell. (2022) Supermaterialer for en bærekraftig framtid. NTNU Researchers Night , Realfagbygget, NTNU Gløshaugen 2022-09-30 - 2022-09-30