This Technical Report provides the results of an international compar ison of measurements of the magnetic moment, using vibrating sample magnetometers (VSM) and superconducting quantum interference device (SQUID) magnetometers.<\/p>\n
The basic object of this comparison is to verify the degree of reproducibility of the method employed as a prerequisite for the prospective development of a related IEC measuring standard.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Overview <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3 Samples 3.1 Hard ferrites 3.2 Magnetic tapes 4 Measuring quantities and measuring conditions 4.1 General 4.2 Hard ferrite spheres <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4.3 Magnetic tape samples 4.4 Role of the measuring temperature <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5 Analysis of the measured quantities <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Figures Figure 1 \u2013 Isotropic and anisotropic ferrites: standard deviations Figure 2 \u2013 Magnetic tape samples: standard deviations <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Figure 3 \u2013 Isotropic and anisotropic ferrites: weighted uncertainties Figure 4 \u2013 Magnetic tape samples: weighted uncertainties <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Figure 5 \u2013 Normalized best values yi\/ of the coercive field strength HcJ and maximum energy product (BH)max <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Annex A (informative) International comparison of measurements of the magnetic moment using vibrating sample magnetometers and SQUID magnetometers Tables Table A.1 \u2013 Magnetic polarization value J800k at Ha = Hpeak = 800 kA\/m measuredby the participating laboratories on the isotropic hard ferrite HF-Iso1 <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figure A.1 \u2013 Dispersion of the J800k values measured by the participating laboratories on the isotropic ferrite sample HF-Iso1 <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure A.2 \u2013 Dispersion of the Jr values measured by the participating laboratories on the isotropic ferrite sample HF-Iso1 Table A.2 \u2013 Remanent magnetic polarization Jr measured by the participating laboratories on the isotropic hard ferrite HF-Iso1 <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure A.3 \u2013 Dispersion of the HcJ values measured by the participating laboratories on the isotropic ferrite sample HF-Iso1 Table A.3 \u2013 Coercive field HcJ measured by the participating laboratories on the isotropic hard ferrite HF-Iso1 <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Figure A.4 \u2013 Dispersion of the HcB values measured by the participating laboratories on the isotropic ferrite sample HF-Iso1 Table A.4 \u2013 Coercive field HcB measured by the participating laboratories on the isotropic hard ferrite HF-Iso1 <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Figure A.5 \u2013 Dispersion of the (BH)max values measured by the participating laboratories on the isotropic ferrite sample HF-Iso1 Table A.5 \u2013 Maximum energy product (BH)max measured by the participating laboratories on the isotropic hard ferrite HF- Iso1 <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Figure A.6 \u2013 Dispersion of the J800k values measured by the participating laboratories on the anisotropic ferrite sample HF-Aniso1 Table A.6 \u2013 Magnetic polarization value J800k at Ha = Hpeak = 800 kA\/m measured by the participating laboratories on the anisotropic hard ferrite HF-Aniso1 <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Figure A.7 \u2013 Dispersion of the Jr values measured by the participating laboratories on the anisotropic ferrite sample HF-Aniso1 Table A.7 \u2013 Remanent magnetic polarization Jr measured by the participating laboratories on the anisotropic hard ferrite HF-Aniso1 <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Figure A.8 \u2013 Dispersion of the HcJ values measured by the participating laboratories on the anisotropic ferrite sample HF-Aniso1 Table A.8 \u2013 Coercive field HcJ measured by the participating laboratories on the anisotropic hard ferrite HF-Aniso1 <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Figure A.9 \u2013 Dispersion of the HcB values measured by the participating laboratories on the anisotropic ferrite sample HF-Aniso1 Table A.9 \u2013 Coercive field HcB measured by the participating laboratories on the anisotropic hard ferrite HF-Aniso1 <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Figure A.10 \u2013 Dispersion of the (BH)max values measured by the participating laboratories on the anisotropic ferrite sample HF-Aniso1 Table A.10 \u2013 Maximum energy product (BH)max measured by the participating laboratories on the anisotropic hard ferrite HF- Aniso1 <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Figure A.11 \u2013 Dispersion of the m400k values measured by the participating laboratories on the magnetic tape sample A1 Table A.11 \u2013 Magnetic moment m400k measured at at Ha = Hpeak = 400 kA\/m by the participating laboratories on the magnetic tape sample 1A <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Figure A.12 \u2013 Dispersion of the mr values measured by the participating laboratories on the magnetic tape sample A1 Table A.12 \u2013 Remanent magnetic moment mr measured by the participating laboratories on the magnetic tape sample 1A <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Figure A.13 \u2013 Dispersion of the S = mr\/m400k values measured by the participating laboratories on the magnetic tape sample A1 Table A.13 \u2013 Squareness ratio S = mr\/m400k measured by the participatinglaboratories on the magnetic tape sample 1A <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure A.14 \u2013 Dispersion of the HcJ values measured by the participating laboratories on the magnetic tape sample A1 Table A.14 \u2013 Coercive field HcJ measured by the participating laboratorieson the magnetic tape sample 1A <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Annex B (informative) Participants <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" International comparison of measurements of the magnetic moment using vibrating sample magnetometers (VSM) and superconducting quantum interference device (SQUID) magnetometers<\/b><\/p>\n |