2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/97447We present the design and construction of a SQUID-based magnetometer for operation down to temperatures T = 10 mK, while retaining the compatibility with the sample holders typically used in commercial SQUID magnetometers. The system is based on a dc-SQUID coupled to a second-order gradiometer. The sample is placed inside the plastic mixing chamber of a dilution refrigerator and is thermalized directly by the 3He flow. The movement though the pickup coils is obtained by lifting the whole dilution refrigerator insert. A home-developed software provides full automation and an easy user interface.RevTex, 10 pages, 10 eps figures. High-resolution figures available upon requestInstrumentation and DetectorsMaterials Sciencetext