\documentclass{aa}
\begin{document}
Most ordinary chondrites have lower coercivity than their main constituent ferromagnetic phases (\cite{gattacceca2003magnetic}). Different meteorites have significantly different magnetic properties. The coercivity of different meteorite classes is 1.78 mT for H chondrites, 5.62 mT for L chondrites and 36.40 mT for LL chondrites. This is true that LL chondrites have higher coercivity than L and H chondrites, because of increasing Fe content of the silicates from H to LL chondrites (\cite{gattacceca2003magnetic}).
\end{document}
the bibtex:
@article{gattacceca2003magnetic,
title={Magnetic properties of a freshly fallen LL ordinary chondrite: the Bensour meteorite},
author={Gattacceca, J{\'e}r{\^o}me and Rochette, Pierre and Bourot-Denise, Mich{\`e}le},
journal={Physics of the Earth and Planetary Interiors},
volume={140},
number={4},
pages={343--358},
year={2003},
publisher={Elsevier}
}
the error:
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l.296 ...main constituent ferromagnetic phases (\�
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(\cite{gattacceca2003magnetic})
specifically between the backslash and thec
ofcite
. Delete that bit and re-type it. – moewe Feb 11 at 13:54\cite
s and both contain invisible characters: The first three, the second four. Copy and paste your text to w3c.github.io/xml-entities/unicode-names.html and search forU+200d
orzero width
. (edit: The\end{document}
also contains unwanted zero-width joiners.) – moewe Feb 11 at 13:57` and
cite`, (4) "Copy" that text again, and (5) "Paste" it back to your tex file. In that way you will be able to see what went wrong... and hopefully surpass that error. – Partha D. Feb 11 at 14:16