What question did this study set out to answer?

To investigate the influence of external hydrostatic pressure and internal chemical pressure on the magnetoresistance and magnetic transition temperatures of doped LaMnO3 at a constant doping level.

December 1, 1995Physical review. B, Condensed matterOpen Access

Pressure effects on the magnetoresistance in doped manganese perovskites

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Authors

HHHarold Y. HwangSLAC National Accelerator Laboratory TPT. T. M. PalstraUniversity of Twente SCSang‐Wook CheongRutgers Sexual and Reproductive Health and Rights

Discussion

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Overview

Experimental study demonstrates pressure-induced increases in Curie temperature in doped manganese perovskites, indicating that the Mn-Mn electronic transfer integral governs magnetotransport.

Key Points

To investigate the influence of external hydrostatic pressure and internal chemical pressure on the magnetoresistance and magnetic transition temperatures of doped LaMnO3 at a constant doping level.
Applied external hydrostatic pressure to doped LaMnO3 perovskite samples with a fixed doping concentration.
Introduced internal chemical pressure systematically by substituting different rare-earth ions for lanthanum.
Modeled structural variations and electronic transport to correlate lattice modifications with the Mn-Mn electronic transfer integral.
External hydrostatic pressure consistently and monotonically increased the Curie temperature across all tested samples.
Internal chemical pressure induced by rare-earth ion substitutions produced structural modifications equivalent to external pressure effects.
A comprehensive phase diagram was established, identifying the Mn-Mn electronic transfer integral as the primary microscopic driver of magnetic and transport properties.

Cite This Study

Hwang et al. (1995) studied this question.

synapsesocial.com/papers/6aa34ca960384f9abab7164d https://doi.org/10.1103/physrevb.52.15046

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December 1, 1995Physical review. B, Condensed matterOpen Access

Pressure effects on the magnetoresistance in doped manganese perovskites

View Full Paper

Ask AI

Bookmark

Authors

HHHarold Y. HwangSLAC National Accelerator Laboratory TPT. T. M. PalstraUniversity of Twente SCSang‐Wook CheongRutgers Sexual and Reproductive Health and Rights

Discussion

Member takes

Overview

Experimental study demonstrates pressure-induced increases in Curie temperature in doped manganese perovskites, indicating that the Mn-Mn electronic transfer integral governs magnetotransport.

Key Points

To investigate the influence of external hydrostatic pressure and internal chemical pressure on the magnetoresistance and magnetic transition temperatures of doped LaMnO3 at a constant doping level.
Applied external hydrostatic pressure to doped LaMnO3 perovskite samples with a fixed doping concentration.
Introduced internal chemical pressure systematically by substituting different rare-earth ions for lanthanum.
Modeled structural variations and electronic transport to correlate lattice modifications with the Mn-Mn electronic transfer integral.
External hydrostatic pressure consistently and monotonically increased the Curie temperature across all tested samples.
Internal chemical pressure induced by rare-earth ion substitutions produced structural modifications equivalent to external pressure effects.
A comprehensive phase diagram was established, identifying the Mn-Mn electronic transfer integral as the primary microscopic driver of magnetic and transport properties.

Cite This Study

Hwang et al. (1995) studied this question.

synapsesocial.com/papers/6aa34ca960384f9abab7164d https://doi.org/10.1103/physrevb.52.15046

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