Professor Abbie McLaughlin

Professor Abbie McLaughlin
BSc (Durham), PhD (Cambridge)

Personal Chair

Overview
Professor Abbie McLaughlin
Professor Abbie McLaughlin

Contact Details

Telephone
work +44 (0)1224 272924
Fax
fax 01224 272921
Email
Address
The University of Aberdeen Meston Room G23

Biography

Professor Abbie Mclaughlin is currently a chair in inorganic chemistry at the University of Aberdeen. Her expertise lies in the synthesis and study of transition metal oxides and oxyarsenides with fascinating electrical and magnetic properties. She has published ~ 65 papers (h-index 19, Google Scholar) on the study of transition metal oxides using structural (powder diffraction) and physical (magnetic and conductivity) measurements. She has secured over £1.5M research funding from sources such as EPSRC, the Leverhulme Trust, the Royal Society of Edinburgh and the Royal Society. She has been awarded ~ 150 days of neutron diffraction and synchrotron X-ray diffraction beamtime at the large-scale facilities of ISIS and Diamond, Didcot and the ILL and ESRF, Grenoble. 

She is a member of the EPSRC college and has served on the EPSRC Physical Sciences panel. She currently reviews for the Oakridge National Laboratory (USA) facility access panel (diffraction). She has previously served on both ISIS and ILL facility access panels.

 

Research

Research Interests

Solid state materials are of fundamental importance due to the plethora of exciting physical properties that have been detected and applied in technological applications. We are interested in synthesising novel materials that exhibit fascinating electrical (ionic conducting) or magnetic properties.

Rietveld refinement of crystallographic models from X-ray and Neutron powder diffraction data (at facilities such as ISIS, Rutherford Appleton Laboratory, Didcot, UK and the ESRF and ILL, Grenoble, France) are used in order to correlate the structure-property relationships in the novel synthesised compounds which enable us to tune the properties of our materials.

Research Expertise

Solid state synthesis

Rietveld refinement of crystallographic models from X-ray and neutron powder diffraction data

Characterisation of ionic condctors via impedance spectroscopy

Electronic and magnetic characterisation of novel oxides and pnictides

Magnetic structure determination

Research Facilities

A suite of high temperature tube and box furnaces (up to 1600 oC) for solid state synthesis

Two top of the range diffractometers (Panalytical X’Pert Powder and Empyrean powder diffractometers)

Variable temperature impedance jig coupled to a Solartron SI 1260 Impedance/Gain-Phase Analyser

Stanton Redcroft TG/DTA

Departmental access to a Mettler Toledo TGA 2 coupled with a Hiden Quadrupole Mass Spectrometer

Departmental access to a Carl Zeiss Gemini SEM 300 to determine the microstructures of samples in addition to EDX measurements

Current Research

Oxide Ion Conductors

 

Solid oxide fuel cells (SOFCs) are electrochemical devices able to generate electricity from renewable energy sources, with high efficiency and low emissions of pollutants. However, oxide ion transport in most commercially available solid electrolytes is enabled only at high working temperatures (> 700 °C), thus making the commercialization of SOFCs particularly challenging. The high operating temperature reduces the components’ durability, results in slow start up times and the necessitation of expensive materials for seals and interconnects. In order to overcome these issues, it is desirable to develop novel electrolyte materials with significant oxide ion conductivity at intermediate temperatures (300 – 600 °C). Ionic conduction in solid oxides is strongly related to the crystal structure, and as a result the discovery and characterization of novel oxide ion conductors in various structural families has attained significant attention from researchers. We have been investigating hexagonal perovskites Ba3M’M’’O8.5 (M’M’’ = VW, NbMo, NbW) which exhibit highly disordered crystal structures and state-of-the art conductivity. We are currently interested in synthesising new materials with different combinations of M’M’’ to see how the chemistry controls the ionic conductivity.

 Mixed Proton/Oxide Ion Conductors

We are also interested in mixed ion conductors, specifically mixed oxide-ion and proton-conductors. Such dual ion conductors have been proposed as a new class of electrolyte for intermediate temperature ceramic fuel cells, as they exhibit low ohmic resistance without external gas humidification. We have been investigating the electrical and structural properties of Ba7Nb4MoO20, a cation-deficient 7H hexagonal perovskite derivative formed by an intergrowth of palmierite layers and 12R perovskite blocks. Ba7Nb4MoO20 supports remarkable oxide ion and proton conductivity with excellent chemical and electrical stability over a range of pO2. The ionic conduction properties of Ba7Nb4MoO20 are linked to its distinct disordered crystal structure. Ba7Nb4MoO20 supports pure ionic conduction with high proton and oxide ion conductivity at 510 °C (the bulk conductivity is 4.0 mS cm-1) and hence is an exceptional candidate for application as a dual-ion solid electrolyte in a ceramic fuel cell which will combine the advantages of both oxide ion and proton conducting electrolytes. We are currently performing chemical doping studies to further enhance the conductivity.

Magnetic Materials

The recent report of high temperature superconductivity in oxypnictides such as LnFeAsO1-xFx with superconducting transition temperatures (Tcs) up to 55 K has led to a rapid expansion in the research of oxypnictide materials. We have recently discovered the counterpart, colossal magnetoresistance (CMR) in Mn2+ based oxypnictides NdMnAsO1-xFx, so that both manifestations of correlated electronic behaviour are now found in these new materials. Colossal magnetoresistant materials exhibit a large change (> 90%) in their electronic resistivity upon application of a magnetic field and have application as magnetoresistive sensors and spintronic devices in which electron spins are used to process information. We are currently investigating more complex cation ordered oxypnictides such as Sr2Mn2CrAs2O2 which exhibit spin reorientation magnetic transitions upon cooling which may show coupling between magnetic and electronic degrees of freedom.

 

 

Research Grants

We have had funding from a range of sources including EPSRC, the Leverhulme Trust, Institut Laue Langevin,  the Commonwealth Scholarship Commission, Chief Scientist Office and the Royal Society.

If you’re interested in joining the group as a PhD student, please email a.c.mclaughlin@abdn.ac.uk.


 
Teaching

Teaching Responsibilities

Dr Mclaughlin teaches the following courses:

  • CM1022 Elements of Chemistry
  • CM2519 Solids
  • CM2012 Electrical Materials
  • CM3037 Transition Metal Chemistry
  • CM4026 Lanthanides and actidnides
  • CM5003 Magnets, metals and superconductors 

 

 

Further Info

Admin Responsibilities

Professor Mclaughlin is currently director of research for the Department of Chemistry.

Publications

Publications 

Currently viewing:

Page 1 of 7 Results 1 to 10 of 65

  • Fop, S, Mccombie, K, Smith, RI & McLaughlin, AC 2020, 'Enhanced Oxygen Ion Conductivity and Mechanistic Understanding in Ba3Nb1-xVxMoO8.5', Chemistry of Materials, vol. 32, no. 11, pp. 4724-4733. [Online] DOI: https://doi.org/10.1021/acs.chemmater.0c01322
  • Fop, S, Mccombie, KS, Wildman, E, Skakle, JMS, Irvine, JTS, Connor, PA, Savaniu, C, Ritter, C & McLaughlin, AC 2020, 'High oxide ion and proton conductivity in a disordered hexagonal perovskite', Nature materials, vol. 19, pp. 752-757. [Online] DOI: https://doi.org/10.1038/s41563-020-0629-4
  • Lawrence, GB, Wildman, EJ, Stenning, GBG, Ritter, C, Fauth, F & McLaughlin, AC 2020, 'The Electronic and Magnetic Properties of Cation Ordered Sr2Mn2.23Cr0.77As2O2', Inorganic Chemistry, vol. 59, no. 11, pp. 7553-7560. [Online] DOI: https://doi.org/10.1021/acs.inorgchem.0c00447
  • Fop, S, McCombie, KS, Wildman, EJ, Skakle, JMS & Mclaughlin, AC 2019, 'Hexagonal perovskite derivatives: a new direction in the design of oxide ion conducting materials', Chemical Communications, vol. 55, no. 15, pp. 2127-2137. [Online] DOI: https://doi.org/10.1039/c8cc09534e
  • Chambers, MS, Mccombie, KS, Auckett, JE, Mclaughlin, AC, Irvine, JTS, Chater, PA, Evans, JSO & Evans, IR 2019, 'Hexagonal perovskite related oxide ion conductor Ba3NbMoO8.5: phase transition, temperature evolution of the local structure and properties', Journal of Materials Chemistry A, vol. 7, no. 44, pp. 25503-25510. [Online] DOI: https://doi.org/10.1039/c9ta08378b
  • Folli, A, Bloh, JZ, Armstrong, K, Richards, E, Murphy, DM, Lu, L, Kiely, CJ, Morgan, DJ, Smith, RI, McLaughlin, AC & MacPhee, DE 2018, 'Improving the selectivity of photocatalytic NOx abatement through improved O2 reduction pathways using Ti0.909W0.091O2Nx semiconductor nanoparticles: from characterisation to photocatalytic performance', ACS Catalysis, vol. 8, pp. 6927-6938. [Online] DOI: https://doi.org/10.1021/acscatal.8b00521
  • Faisal, NH, Sanaee, R, Singh, RM, Murray, J, McLaughlin, A, Healy, D & Lee, TL 2018, 'Neutron scattering study of strain behaviour of porous rocks subjected to heating and unconfined uniaxial compression', Journal of Physics: Conference Series, vol. 1106, no. 1, 012011. [Online] DOI: https://doi.org/10.1088/1742-6596/1106/1/012011
  • Cabello, G, Nwoko, KC, Mingarelli, M, McLaughlin, AC, Trembleau, L, Feldmann, J, Cuesta Ciscar, A & Smith, TAD 2018, 'Physicochemical Tools: Toward a Detailed Understanding of the Architecture of Targeted Radiotherapy Nanoparticles', ACS Applied Bio Materials, vol. 1, no. 5, pp. 1639-1646. [Online] DOI: https://doi.org/10.1021/acsabm.8b00476
  • McCombie, KS, Wildman, EJ, Fop, S, Smith, RI, Skakle, JMS & McLaughlin, AC 2018, 'The Crystal Structure and Electrical Properties of the Oxide Ion Conductor Ba3WNbO8.5', Journal of Materials Chemistry A, vol. 6, no. 13, pp. 5290-5295. [Online] DOI: https://doi.org/10.1039/C7TA08989A
  • McCombie, KS, Wildman, EJ, Ritter, C, Smith, RI, Skakle, JMS & Mclaughlin, AC 2018, 'The Relationship between the Crystal Structure and Electrical Properties of Oxide Ion Conducting Ba3W1.2Nb0.8O8.6', Inorganic Chemistry, vol. 57, no. 19, pp. 11942-11947. [Online] DOI: https://doi.org/10.1021/acs.inorgchem.8b01366
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