Towards engineering the perfect defect in high-performing permanent magnets

Permanent magnets draw their properties from a complex interplay, across multiple length scales, of the composition and distribution of their constituting phases, that act as building blocks, each with their associated intrinsic properties. Gaining a fundamental understanding of these interactions is hence key to decipher the origins of their magnetic performance and facilitate the engineering of better-performing magnets, through unlocking the design of the "perfect defects" for ultimate pinning of magnetic domains. Here, we deployed advanced multiscale microscopy and microanalysis on a bulk Sm2(CoFeCuZr)17 pinning-type high-performance magnet with outstanding thermal and chemical stability. Making use of regions with different chemical compositions, we showcase how both a change in the composition and distribution of copper, along with the atomic arrangements enforce the pinning of magnetic domains, as imaged by nanoscale magnetic induction mapping. Micromagnetic simulations bridge the scales to provide an understanding of how these peculiarities of micro- and nanostructure change the hard magnetic behaviour of Sm2(CoFeCuZr)17 magnets. Unveiling the origins of the reduced coercivity allows us to propose an atomic-scale defect and chemistry manipulation strategy to define ways toward future hard magnets

Stories from the field:Women's networking as gender capital in entrepreneurial ecosystems

Women are underrepresented in successful entrepreneurial ecosystems and the creation of women-only entrepreneurial networks has been a widespread policy response. We examine the entrepreneurial ecosystem construct and suggest that it, and the role networks play in entrepreneurial ecosystems, can be analysed in terms of Bourdieu's socio-analysis as field, habitus and capital. Specifically, we develop the notion of gender capital as the skill set associated with femininity or from simply being recognized as feminine. We apply this to the development of women's entrepreneurial networks as a gender capital enhancing initiative. Using data from qualitative interviews with network coordinators and women entrepreneurs we reflect on the extent to which formally established women-only networks generate gender capital for their members and improve their ability to participate in the entrepreneurial ecosystem. The paper concludes by drawing out the implications of our analysis for theory, entrepreneurial practice and economic development policy

Extrinsic motivation as a determinant of knowledge exchange in sales teams: A social network approach

This paper investigates extrinsic motivation as a determinant of knowledge exchange among employees in sales teams. Applying a social network approach, we study different forms of knowledge‐exchange behaviors from the perspective of a focal employee and from the perspective of the dyad. From the focal employees' perspective, we disentangle knowledge seeking from knowledge providing, and argue that these two behaviors are affected differently by employees' extrinsic motivation. From the dyad perspective, we take similarity in motivation of tied‐to employees and reciprocity of exchange ties into account. To test our hypotheses, we apply exponential random graph models to data gathered from 138 employees in five different sales teams distributed across three companies in Central Europe. The results of our analysis from the focal employees' perspective show that extrinsically motivated employees generally engage in less knowledge exchange. The dyad perspective further highlights that sales employees proceed purposefully when they exchange knowledge with coworkers. For instance, two employees' relative levels of extrinsic motivation determine their willingness to engage in reciprocal knowledge exchange. We discuss the implications of our findings for research on the microfoundations of organizational knowledge management and draw conclusions concerning HRM practices used to foster extrinsic motivation, thereby affecting knowledge exchange

Replacement and Original Magnet Engineering Options (ROMEOs): A European Seventh Framework Project to Develop Advanced Permanent Magnets Without, or with Reduced Use of, Critical Raw Materials

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