Articles

Topics:

• Instrumentation and Techniques
• Magnetic Minerals and Low Temperature Magnetism
• Magnetic Units
• Sample Preparation
• Standards
• Historical Reviews

• Obituaries

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Instrumentation and Techniques

Alternating Field Demagnetization

• A case for adopting the magnetic core alternating field demagnetizer (IRMQ31-4)

Anisotropy

• Towards a holistic understanding of complex magnetic fabrics (IRMQ26-4)
• Low Temperature AMS protocol using the MFK Kappabridge (IRMQ27-2)
• Gustaf Ising's early work on magnetic fabrics (IRMQ27-1)
• Commonly used experimental parameters for acquisition of anhysteretic remanent magnetization (ARM) and its anisotropy (AARM): Results and recommendations from a rock magnetic community survey (IRMQ28-3)
• Foundations of Magnetic Anisotropy: A Brief Review (IRMQ29-4)
• Practical Magnetism III: What’s what in remanence anisotropy (IRMQ30-2)
• Practical Magnetism VII: Avoiding common misconceptions in magnetic fabric interpretation (IRMQ31-3)
• Practical Magnetism VIII: reporting and visualization of magnetic anisotropy data (IRMQ32-1)
• Practical Magnetism IX: Evaluating statistical significance of magnetic anisotropy data (IRMQ32-3)
• Principles of statistical evaluation of anisotropy of magnetic susceptibility – Specimen level (IRMQ33-3)

Deconvolution of U-channel Data

• BEYOND U-CHANNELS - Improving the deconvolution of u-channel magnetometer data for non-standard sample geometries (IRMQ22-3)

Electron Holography

• Electron Holography and Rock Magnetism (IRMQ16-4)

First-Order Reversal Curves (FORCs)

• FORC analysis of frozen ferrofluids (IRMQ11-1)
• A FORC in the Road? (IRMQ15-3)
• Practical Magnetism V: another FORC in the road? Understanding, measuring, and interpreting FORC diagrams, part A  (IRMQ30-4)
• Practical Magnetism VI: another FORC in the road? Understanding, measuring, and interpreting FORC diagrams, part B (IRMQ31-2)

Goethite Tests

• Tinkering with the wheel: can the goethite test run more smoothly? (IRMQ29-2)

Hysteresis

• On the connections between hysteresis loops, Sir Alfred Ewing and pigs drawn whilst blindfolded

Inclination Shallowing

• The do's and don'ts of inclination shallowing corrections (IRMQ26-3)

Isothermal Magnetic Tests

• Magnetic tests and characterization protocols: mineralogy and grain size / domain state Part I: isothermal strong field tests  (IRMQ27-4)
• Magnetic tests and characterization protocols: mineralogy and grain size / domain state Part II: isothermal weak field tests (IRMQ28-2)

Low Temperature Probe

• New Low-Temp Probe for 3-Axis Magnetic measurements (IRMQ19-4)

Kappabridge

• Kudos for the Kappabridge (IRMQ4-2)

Magnetic Core Alternating Field Demagnetizer

• A case for adopting the magnetic core alternating field demagnetizer (IRMQ31-4)

Magnetic Force Microscope (MFM)

• MFM’s Miniscule Mechanism Maps Magnetic Moments (IRMQ2-4)
• Some Like it Hot! A new high temperature MFM comes online at the IRM (IRMQ23-3)

Magnetic Properties Measurement System (MPMS)

• New Equipment at IRM Allows Novel Measurements (IRMQ2-1)
• New Low-Temperature Measurement Capabilities (IRMQ8-4)
• What do the Mumpsies do? (IRMQ23-3)

• Use our new tools! Welcoming a new VSM and MPMS into the IRM (IRMQ33-4)

Magnetic Susceptibility

• Imaginary Susceptibility- A Primer (IRMQ13-4)
• A cautionary note: On interpreting frequency-dependence of susceptibility solely in terms of superparamagnetism or Two ways to be wrong (IRMQ10-4)
• Practical Magnetism X: A review of the low temperature AC susceptibility frequency-dependence of multidomain (titano)magnetite (IRMQ32-4)
• Practical Magnetism XI: The low temperature AC susceptibility of multidomain (titano)magnetite, an addendum on its amplitude dependence (IRMQ33-1)

Magnetic Unmixing

• Magnetic Taxonomy (IRMQ15-2)

Magneto-Optic Kerr Effect (MOKE)

• MOKE Magnifies Magnetic Moments [Magnificently!] (IRMQ2-2)

Mössbauer Spectroscopy

• Mössbauer: Marvelous Measurements of Magnetic Minerals (IRMQ2-3)
• Mössbauer Revisited (IRMQ8-3)
• Mössbauer Revisited Again measurement in applied fields (IRMQ14-2)

Quantifying Uncertainties

• On Sample Size and Shape Effects -or- Exactly How Magnetic Is Your Sample? (IRMQ11-4)
• And Unknown Unknowns¹- on quantifying uncertainty in rock-magnetic properties (IRMQ17-2)
• Superconducting Quantum Interference Devices (IRMQ19-1)

SQUID Magnetometer

• SQUID attack! (IRMQ19-1)

Vibrating Sample Magnetometer (VSM)

• New Equipment at IRM Allows Novel Measurements (IRMQ2-1)
• Micro-VSM Maximizes Magnetic Measurements (IRMQ5-4)
• Use our new tools! Welcoming a new VSM and MPMS into the IRM (IRMQ33-4)

Magnetic Flux

• This Thing Called Flux (a primer) (IRMQ18-1)

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Magnetic Minerals and Low Temperature Magnetism

Hematite

• The Hematite Morin Transition (260 K) (IRMQ20-1)
• Practical Magnetism IV: feats and challenges in quantifying hematite with magnetic methods (IRMQ30-3)

Ilmenite

• Paths through the exchange jungle (IRMQ17-4)

Maghemite

• Practical Magnetism II: Humps and a Bump, the Maghemite Song (IRMQ30-1)

Magnetite

• Fe₃O₄ Smoked at 80K (IRMQ15-4)
• The Magnetite Verwey Transition (120 K) (IRMQ20-4)
• The Magnetite Verwey Transition (Part B) (IRMQ21-4)
• The Magnetite Verwey Transition (Part C) (IRMQ22-2)
• Practical Magnetism I: Discriminating SD and MD
  magnetite particle behavior through FC-ZFC remanence curves (IRMQ29-3)

Pyrrhotite

• The Pyrrhotite Transition (32 K) (IRMQ21-1)

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Magnetic Units

• Measure for Measure: The Beauty of Magnetic Units (IRMQ9-1)
• A new basis for the SI system of units: occasion to reconsider the presentation and teaching of magnetism (IRMQ24-4)

• A new basis for the SI system of units? A micromagnetist's perspective (IRMQ25-1)

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Sample preparation

• Sample Preparation Specifications (IRMQ6-4)
• Seven Secrets to Sample Prep Set Stage for Success! (IRMQ19-2)

• The iron that binds: The unexpectedly strong magnetism of high-temperature ceramic cements commonly used in rock magnetic experiments (IRMQ24-2)

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Standards

• Maintaining High Standards (IRMQ12-3)
• Maintaining Standards II more fun with calibration (IRMQ12-4)
• Maintaining Standards III: Pozzolana Cement cross-calibration samples available (IRMQ13-3)
• Tiva Canyon Tuff (I): Superparamagnetic Samples Available (IRMQ14-3)

• Tiva Canyon Tuff (II) Near Single-Domain Standard Reference Material Available (IRMQ16-1)

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Historical Reviews

• Poor Richard's Theory of the Earth (IRMQ6-3)
• In the Shadow of the Comet: The Geophysical Bounty of Edmond Halley (IRMQ7-4)
• Gilbert On the Magnet, MDC (IRMQ9-4)
• von Humbolts' Equinoxial Journey (IRMQ11-2)
• Johann von Lamont (1805-1879): A pioneer in geomagnetism (IRMQ14-4)
• 1905: Brownschen Molekularbewegung (IRMQ15-1)
• The Early History of Geomagnetic Field Reversals (IRMQ20-3)
• On the connections between hysteresis loops, Sir Alfred Ewing and pigs drawn whilst blindfolded (IRMQ22-4)
• Gustaf Ising's early work on magnetic fabrics (IRMQ27-1)

• Foundations of Magnetic Anisotropy: A Brief Review (IRMQ29-4)

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Obituaries

• Rudolf L. Mössbauer, 1929-2011 (IRMQ21-3)
• Lindsay (Lin) George Parry, 1922 - 2016 (IRMQ26-2)