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Item type:Publication, Introduction to Perovskites: A Historical Perspective(Springer, 2020-01-01)The chapter focuses on how the name perovskite evolved from being used for a particular, and geologically not very relevant, mineral discovered in the eighteen century to symbolize a vast number of essential materials in our society that are also intensively investigated nowadays due to their promising applications. The transition took decades to occur and involved several scientists from different but related disciplines such as geology, mineralogy, chemistry, and physics. Here, a short and condensed account of the history of research on perovskites since the discovery of the mineral is given. The account would include how and when the perovskite family grew and incorporated related structures such as the hexagonal perovskites, double (or elpasolite ) perovskites, Aurivillius and Ruddlesden-Popper layered phases, and oxygen-deficient compounds, among others. Special attention is given to the relevant scientists that inspired hundreds of others. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, James Edward Huheey (1935 - 2020). En memoria de un químico fuera de lo común.(LA Referencia, 2020-12-08)This short note summarises the unusual characteristics of the author of one of the best-known books in the area of inorganic chemistry: James E. Huheey. This American chemist was so passionate about herpetology that he excelled in both sciences and gained respect from all his peers. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Introduction to Perovskites(Elsevier BV, 2023-01-01)The goal of this chapter will be to briefly describe what we understand as “material with a perovskite structure” and then discuss some areas of interest outside the leading research trends (solar cells or ferroelectric substances). These properties will be related to the two essential characteristics of this “simple” and, at the same time, complex structure: its unmatching chemical and structural flexibility. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Analytical Study of an 1899 Peruvian Dinero: Unveiling the Mystery of a Coin That Wasn’t Officially Minted(Springer Science and Business Media Deutschland GmbH, 2023-12-01)The present paper presents the analytical study of an unusual Peruvian 1899 dinero coin whose authenticity has been questioned since the 1970’s. This coin, which is present in some numismatic collections although there is no record of having been minted officially, has been characterized using non-destructive techniques such as X-ray fluorescence (XRF), scanning electron microscopy coupled with energy dispersive spectroscopy (SEM–EDS), and X-ray diffraction (XRD). Results are consistent with a cast counterfeit coin made at the turn of the 19th and 20th using a copper base alloy that was silver-platted to pass unnoticed among the public. The alloy used, generally known as german silver, was common for counterfeits in North America and Europe in that period. The historical reasons for the appearance of this unexpected coin in Peru during a time of economic difficulties, where the public experienced a shortage of small-change coins, are briefly outlined.